<SEC-DOCUMENT>0000917225-19-000011.txt : 20190730
<SEC-HEADER>0000917225-19-000011.hdr.sgml : 20190730
<ACCEPTANCE-DATETIME>20190729181745
ACCESSION NUMBER:		0000917225-19-000011
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		53
CONFORMED PERIOD OF REPORT:	20190630
FILED AS OF DATE:		20190730
DATE AS OF CHANGE:		20190729

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOLITARIO ZINC CORP.
		CENTRAL INDEX KEY:			0000917225
		STANDARD INDUSTRIAL CLASSIFICATION:	GOLD & SILVER ORES [1040]
		IRS NUMBER:				841285791
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32978
		FILM NUMBER:		19982705

	BUSINESS ADDRESS:	
		STREET 1:		4251 KIPLING STREET
		STREET 2:		SUITE 390
		CITY:			WHEAT RIDGE
		STATE:			CO
		ZIP:			80033
		BUSINESS PHONE:		3035341030

	MAIL ADDRESS:	
		STREET 1:		4251 KIPLING STREET
		STREET 2:		SUITE 390
		CITY:			WHEAT RIDGE
		STATE:			CO
		ZIP:			80033

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOLITARIO EXPLORATION & ROYALTY CORP.
		DATE OF NAME CHANGE:	20080616

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SOLITARIO RESOURCES CORP
		DATE OF NAME CHANGE:	20000711
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>q22019.htm
<TEXT>
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<HEAD>
<TITLE></TITLE>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><B> </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>UNITED STATES SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>FORM 10-Q</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;&nbsp;(Mark One)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;<B>[X] QUARTERLY REPORT PURSUANT TO SECTION
13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">For the quarterly period ended<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>June
30, 2019</B></U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">OR</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify; text-indent: -0.5in"><B>[&nbsp;&nbsp;]
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934&nbsp;&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: center; text-indent: -0.5in">For the transition
period from<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>to<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">Commission File Number. &nbsp;&nbsp;<B><U>001-39278</U></B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B><U>SOLITARIO ZINC CORP.</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center"><U>(Exact name of registrant as specified
in its charter)</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 67%; padding-right: 5.4pt; padding-left: 5.4pt; font: 10pt Times New Roman, Times, Serif; layout-grid-mode: line"><B><U>Colorado </U></B><BR>
<B>(State or other jurisdiction of incorporation or organization) <BR></B>
<B><U>4251 Kipling St. Suite 390, Wheat Ridge, CO</U></B><BR>
<B>(Address of principal executive offices)</B><BR>
<B><U>(303)&nbsp; 534-1030</U></B><BR>
<B>(Registrant's telephone number, including area code)</B></TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; font: 10pt Times New Roman, Times, Serif; layout-grid-mode: line"><B><U>84-1285791 </U></B><BR>
<B>(I.R.S. Employer Identification No.</B><BR>
<B><U>80033</U></B><BR>
<B>(Zip Code)</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 7pt; text-align: center"><FONT STYLE="background-color: white"><B>Securities
registered pursuant to Section 12(b) of the Act:</B></FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 35%; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-size: 9pt"><B>Title of Each Class</B></FONT></TD>
    <TD STYLE="width: 1%; background-color: #CCCCFF; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line">&nbsp;</TD>
    <TD STYLE="width: 14%; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-size: 9pt"><B>Trading Symbol</B></FONT></TD>
    <TD STYLE="width: 1%; background-color: #CCCCFF; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line">&nbsp;</TD>
    <TD STYLE="width: 49%; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-size: 9pt"><B>Name of Each Exchange on Which Registered</B></FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center">Common Stock, $0.01 par value</TD>
    <TD STYLE="vertical-align: top; background-color: #CCCCFF; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center">XPL</TD>
    <TD STYLE="vertical-align: bottom; background-color: #CCCCFF; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2pt; padding-bottom: 2pt; layout-grid-mode: line; text-align: center">NYSE American</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 6pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 6pt 0">Indicate by checkmark whether the registrant (1) has
filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months
(or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements
for the past 90 days.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 23%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">YES &#9746;</TD>
    <TD STYLE="width: 25%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD>
    <TD STYLE="width: 52%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">NO
    &#9744;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0">Indicate by check mark whether the registrant has posted
on its corporate Web site, if any, every Interactive Data File required to be posted pursuant to Rule 405 of Regulation S-T (&sect;232.405
of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to post such files).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0.25in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 23%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">YES &#9746;</TD>
    <TD STYLE="width: 25%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD>
    <TD STYLE="width: 52%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">NO &#9744;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0.25in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-align: justify">Indicate by check mark whether the
registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging
growth company. See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer,&#8221; &#8220;smaller reporting
company&#8221; and &#8220;emerging growth company&#8221; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0.25in; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 17%; layout-grid-mode: line">Large accelerated filer&nbsp;&#9744;</TD>
    <TD STYLE="width: 17%; layout-grid-mode: line">Accelerated filer&nbsp;&#9744;</TD>
    <TD STYLE="width: 26%; layout-grid-mode: line">Non-accelerated filer &#9744;<BR>
<BR></TD>
    <TD STYLE="width: 21%; layout-grid-mode: line">Smaller reporting company&nbsp;&#9746;</TD>
    <TD STYLE="width: 19%; layout-grid-mode: line">Emerging Growth Company &#9744;</TD></TR>
</TABLE>
<P STYLE="font: 10pt/120% Times New Roman, Times, Serif; margin: 9pt 0 0; text-align: justify">If an emerging growth company,
indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised
financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. &#9744;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Indicate by check mark whether the registrant is a shell company
(as defined in Rule 12b-2 of the Exchange Act).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 24%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">YES &#9744;</TD>
    <TD STYLE="width: 24%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD>
    <TD STYLE="width: 52%; padding-right: 26.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">NO &#9746;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;There were 58,138,266 shares of $0.01
par value common stock outstanding as of July 29, 2019.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0 3pt; text-align: center"><A NAME="toc"></A>TABLE OF CONTENTS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify">PART 1 - FINANCIAL INFORMATION</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-weight: bold; text-align: right">Page</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 70%; font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 1&nbsp;&nbsp;&nbsp;&nbsp; Financial Statements</TD><TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 18%; text-align: right">3</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 2&nbsp;&nbsp;&nbsp;&nbsp;Management's Discussion and Analysis of Financial</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Condition and Results of Operations</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">16</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 3&nbsp;&nbsp;&nbsp;&nbsp;Quantitative and Qualitative Disclosures About Market Risk</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">23</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: normal; text-align: justify; padding-left: 5.4pt"><B>Item 4&nbsp;&nbsp;&nbsp;&nbsp;Controls and Procedures</B></TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">23</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">PART II - OTHER INFORMATION</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 1&nbsp;&nbsp;&nbsp;&nbsp;Legal Proceedings</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">23</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 1A&nbsp;&nbsp;&nbsp;Risk Factors</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">23</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 2&nbsp;&nbsp;&nbsp;&nbsp;Unregistered Sales of Equity Securities and Use of Proceeds</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 3&nbsp;&nbsp;&nbsp;&nbsp;Defaults Upon Senior Securities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 4&nbsp;&nbsp;&nbsp;&nbsp;Mine Safety Disclosures</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 5&nbsp;&nbsp;&nbsp;&nbsp;Other Information</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: justify; padding-left: 5.4pt">Item 6&nbsp;&nbsp;&nbsp;&nbsp;Exhibits</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">SIGNATURES</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">25</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>&nbsp;</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>PART I - FINANCIAL INFORMATION</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Item 1. <U>Financial Statements</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SOLITARIO ZINC CORP.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">CONDENSED CONSOLIDATED BALANCE SHEETS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands of U.S. dollars,</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">June 30,</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">December 31,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>except share and per share amounts)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">2019</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">2018</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">(unaudited)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD COLSPAN="9" STYLE="font-weight: normal; text-align: center">Assets</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Current assets:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 56%; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Cash and cash equivalents</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">564</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">117</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Short-term investments</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">8,714</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">10,223</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Investments in marketable equity securities, at fair value</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,196</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,585</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;Prepaid expenses and other</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">416</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">211</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: normal; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Total current assets</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">10,890</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">12,136</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: normal; text-align: left; padding-left: 5.4pt">Mineral properties</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">15,617</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">15,657</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Other assets</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">161</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">110</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Total assets</B></TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">26,668</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">27,903</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD COLSPAN="9" STYLE="text-align: center">Liabilities and Shareholders&rsquo; Equity</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Current liabilities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Accounts payable</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">667</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">688</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;Operating lease liability</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">39</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Total current liabilities</B></TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">706</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">688</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Long-term liabilities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Asset retirement obligation &ndash; Lik</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">125</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">125</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;Operating lease liability</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">28</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Total long-term liabilities</B></TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">153</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">125</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Commitments and contingencies (Note 8)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-left: 5.4pt">Equity:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Shareholders&rsquo; equity:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Preferred stock, $0.01 par value, authorized 10,000,000<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;shares (none issued and outstanding at June 30, 2019 and <BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;December 31, 2018)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Common stock, $0.01 par value, authorized 100,000,000 shares<BR> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(58,138,266 and 58,171,466 shares, respectively, issued <BR>and outstanding at June 30, 2019&nbsp;and December 31, 2018)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">581</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">582</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Additional paid-in capital</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">70,036</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">69,873</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Accumulated deficit</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(44,808</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(43,365</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total shareholders&rsquo; equity</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">25,809</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">27,090</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and shareholders&rsquo; equity</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">26,668</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">27,903</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">See Notes to Unaudited Condensed Consolidated Financial Statements</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 17.1pt 0 0; text-align: center">SOLITARIO ZINC CORP.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0; text-align: center">CONDENSED CONSOLIDATED STATEMENTS
OF OPERATIONS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0; text-align: center">(Unaudited)</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid">(in thousands of US dollars, except per share amounts)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center; border-bottom: Black 1pt solid">Three months ended<BR> June 30</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center; border-bottom: Black 1pt solid">Six months ended<BR> June 30</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Revenue, net &ndash; mineral property sale</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">502</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">408</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">502</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Costs, expenses and other:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;Exploration expense</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">702</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">162</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">865</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">342</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;&nbsp;Depreciation</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">6</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">6</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">13</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">12</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;General and administrative</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">321</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">762</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">746</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">1,165</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Total costs, expenses and other</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,029</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">930</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,624</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,519</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Other (loss) income</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: normal; text-align: left; padding-left: 5.4pt">&nbsp;Interest income (net)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">90</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">37</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">162</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">63</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;Unrealized (loss) on marketable equity securities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(63</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(222</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(389</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(663</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Total other income (loss)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">27</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(185</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(227</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(600</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Net loss</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,002</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(613</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,443</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,617</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-left: 5.4pt">Loss per common share:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Basic and diluted</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">(0.02</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">(0.01</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">(0.02</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">(0.03</TD><TD STYLE="text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-left: 5.4pt">Weighted average shares outstanding:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Basic and diluted</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">58,141</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">58,390</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">58,151</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">58,439</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">See Notes to Unaudited Condensed Consolidated Financial
Statements</P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 6pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">&nbsp;</P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0; text-align: center">SOLITARIO ZINC CORP.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0; text-align: center">CONDENSED CONSOLIDATED STATEMENTS
OF CASH FLOWS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0; text-align: center">(Unaudited)</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands of U.S. dollars)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">Six months ended<BR> June 30,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Operating activities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 56%; text-align: left; padding-left: 5.4pt">&nbsp;Net loss</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">(1,443</TD><TD STYLE="width: 1%; text-align: left">)</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">(1,617</TD><TD STYLE="width: 1%; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;Adjustments to reconcile net loss to net cash used in&nbsp;operating activities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Depreciation</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">13</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">12</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Non-cash office lease expense</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">20</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Unrealized loss on marketable equity securities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">389</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">663</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Employee stock option expense </TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">173</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">442</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;Changes in operating assets and liabilities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other assets</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">114</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">48</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Note receivable, net of mineral property sold</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(223</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable and other current liabilities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(38</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">12</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in operating activities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(995</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(440</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Investing activities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;Sale of short-term investments, net</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,453</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">509</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;Purchase of other assets</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(8</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by investing activities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">1,453</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">501</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-left: 5.4pt">Financing activities:</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;Purchase of common stock for cancellation</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(11</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(65</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in financing activities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(11</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(65</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Net increase (decrease) in cash and cash equivalents</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">447</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(4</TD><TD STYLE="text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Cash and cash equivalents, beginning of period</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">117</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">214</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-weight: bold; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Cash and cash equivalents, end of period</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">564</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">210</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">See Notes to Unaudited Condensed Consolidated Financial
Statements</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center">NOTES TO UNAUDITED CONDENSED CONSOLIDATED
FINANCIAL STATEMENTS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center">(Unaudited)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Business
and Significant Accounting Policies</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Business and company formation</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario Zinc Corp. (&#8220;Solitario,&#8221;
or the &#8220;Company&#8221;) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities
and Exchange Commission (&#8220;SEC&#8221;). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly
owned subsidiary of Crown Resources Corporation (&quot;Crown&quot;). In July 1994, Solitario became a publicly traded company on
the Toronto Stock Exchange (the &quot;TSX&quot;) through its initial public offering. Solitario has been actively involved in mineral
exploration since 1993. Solitario&#8217;s primary business is to acquire exploration mineral properties or royalties and/or discover
economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the
development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties,
pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations,
or create a royalty with a third party that continues to advance the property. Solitario is primarily focused on the acquisition
and exploration of zinc-related exploration mineral properties, however Solitario will evaluate and potentially acquire other base
and precious metal mineral exploration properties. In addition to focusing on its mineral exploration properties, Solitario also
evaluates potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration
potential or business combinations that Solitario determines to be favorable to Solitario.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue in
the past from the sale of mineral properties, including the sale of certain mineral royalty properties in January 2019, discussed
below, and the sale in June 2018 of its interest in the royalty on the Yanacocha property. Revenues and / or proceeds from the
sale or joint venture of properties or assets have not been a consistent annual source of cash and would only occur in the future,
if at all, on an infrequent basis.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario currently considers its
carried interest in the Florida Canyon project and its interest in the Lik project to be its core mineral property assets. Nexa
Resources, Ltd. (&#8220;Nexa&#8221;), Solitario&#8217;s joint venture partner, is continuing the exploration and furtherance of
the Florida Canyon project and Solitario is monitoring progress at Florida Canyon. Solitario is working with its 50% joint venture
partner, Teck American Incorporated, a wholly owned subsidiary of Teck Resources Limited (both companies are referred to as &#8220;Teck&#8221;),
in the Lik deposit to further the exploration of, and to evaluate potential development plans, for the Lik project.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"><FONT STYLE="color: windowtext">As
of June 30, 2019, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part,
to further the exploration of the Florida Canyon and Lik projects and to potentially acquire additional mineral property assets.
The</FONT> fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration
and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced
mineral exploration projects or other related assets at potentially attractive terms.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The accompanying interim condensed
consolidated financial statements of Solitario for the three and six months ended June 30, 2019 are unaudited and are prepared
in accordance with accounting principles generally accepted in the United States of America (&#8220;generally accepted accounting
principles&#8221;). They do not include all disclosures required by generally accepted accounting principles for annual financial
statements, but in the opinion of management, include all adjustments, consisting only of normal recurring items, necessary for
a fair presentation. Interim results are not necessarily indicative of results, which may be achieved in the future or for the
full year ending December 31, 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">These financial statements should
be read in conjunction with the financial statements and notes thereto which are included in Solitario&#8217;s Annual Report on
Form 10-K for the year ended December 31, 2018. The accounting policies set forth in those annual financial statements are the
same as the accounting policies utilized in the preparation of these financial statements, except as modified for appropriate interim
financial statement presentation.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Recent Developments</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><U>Royalty sale</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 22, 2019, Solitario completed
the sale of its interest in certain royalties to SilverStream SEZC, a private Cayman Island royalty and streaming company (&#8220;SilverStream&#8221;)
for Cdn$600,000 (the &#8220;Royalty Sale&#8221;). The Royalty Sale covered (i) a royalty on the formerly Solitario-owned 125,000-acre
polymetallic Pedra Branca palladium, platinum, gold, nickel, cobalt and chrome project in Brazil, (ii) a royalty covering 3,880-acres
of non-producing exploration properties in Mexico, and (iii) a purchase option on 11 separate non-producing properties covering
over 16,500 acres in Montana. On closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and a convertible note from
SilverStream in the principal amount of Cdn$350,000 (the &#8220;SilverStream Note&#8221;). The SilverStream Note is due December
31, 2019, accrues 5% per annum simple interest, payable on a quarterly basis, and is convertible into common shares of SilverStream,
at the discretion of SilverStream, by providing Solitario a notice of conversion. Solitario recorded interest income of $3,000
and $6,000, respectively, from the SilverStream Note during the three and six months ended June 30, 2019. SilverStream may only
provide a notice of conversion if SilverStream has completed an initial public offering during the term of the SilverStream Note
for minimum proceeds of Cdn$5,000,000, otherwise the SilverStream note will be payable in cash at the maturity date. Pursuant to
the terms of the SilverStream Note, if converted, Solitario would receive common shares converted at 85% of the weighted average
quoted price of a share of SilverStream common stock for the most recent 10-day period prior to the notice of conversion. During
the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of
the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date
of the sale of $263,000 less the carrying value of the royalties sold of $40,000. As of June 30, 2019, the approximate fair value
of the SilverStream Note was $267,000, based upon the current US Dollar / Canadian Dollar exchange rate, and Solitario recorded
a credit to exchange gain and loss of $4,000, included in general and administrative expense during the six months ended June 30,
2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Financial reporting</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The consolidated financial statements
include the accounts of Solitario and its wholly owned subsidiaries. All significant intercompany accounts and transactions have
been eliminated in consolidation. The consolidated financial statements are prepared in accordance with generally accepted accounting
principles and are expressed in U.S. dollars.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Revenue recognition</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue from
the sale of exploration mineral properties and joint venture property payments. Solitario&#8217;s policy is to recognize revenue
from the sale of its exploration mineral properties (those without reserves) on a property by property basis, computed as the cash
received and / or expected collectable receivables less any capitalized cost. Payments received for the sale of exploration property
interests that are less than the properties cost are recorded as a reduction of the related property's capitalized cost. In addition,
Solitario&#8217;s policy is to recognize revenue on any receipts of joint venture property payments in excess of its capitalized
costs on a property that Solitario may lease to another mining company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recognized revenue
during the six months ended June 30, 2019 of $408,000 related to the Royalty Sale, discussed above, in accordance with Accounting
Standards Codification (&#8220;ASC&#8221;) 606. In addition, Solitario recorded revenue during the second quarter of 2018 of $502,000
from the sale of its Yanacocha exploration mineral property. Solitario expects any property or asset sales in the future to be
on an infrequent basis. Prior to the sale of its Yanacocha exploration mineral property, the last proceeds from joint venture property
payments was in 2015 and Solitario does not expect to record joint venture property payments on any of its currently held properties
for the foreseeable future.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Use of estimates</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The preparation of financial statements
in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those
estimates. Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to:
(i) Solitario&#8217;s carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral
exploration properties and their future exploration potential; (iii) the fair value of stock option grants to employees, to officers
and directors and to others; (iv) the ability of Solitario to realize its deferred tax assets; (v) the collectability of the SilverStream
Note; and (vi) Solitario's investment in marketable equity securities.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In performing its activities, Solitario
has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral
property interests or the development of economically recoverable ore reserves and the ability of Solitario or its joint venture
partners to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable
operations, none of which is assured.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Cash equivalents </I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Cash equivalents include investments
in highly liquid money-market securities with original maturities of three months or less when purchased. As of June 30, 2019,
$553,000 of Solitario&#8217;s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered
under the Federal Deposit Insurance Corporation (&#8220;FDIC&#8221;) rules for the United States.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Short-term investments</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">As of June 30, 2019, Solitario has
$8,714,000 of its current assets in United States Treasury Securities (&#8220;USTS&#8221;) with maturities of 15 days to 18 months.
The USTS are recorded at their fair value, based upon quoted market prices and are not covered under the FDIC insurance rules for
United States deposits, with increases or decreases in fair market value recorded as interest income in the statement of operation
in the period. Solitario&#8217;s USTS are highly liquid and may be sold in their entirety at any time at their quoted market price
and are classified as a current asset.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Mineral properties </I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario expenses all exploration
costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a
feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations
of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets.
All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of
an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset
or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Leases</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for its leases
in accordance with ASC 842, <I>Leases</I> (&#8220;ASC 842&#8221;) by recognizing right-of-use assets and lease liabilities on the
condensed consolidated balance sheet and disclosing key information about lease arrangements. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption of ASC 842, as the initial date of transition and not to
restate comparative prior periods and to carry forward historical lease classification. In addition, Solitario has elected the
option not to apply the recognition of assets and liabilities provisions of ASC 842 to operating leases of less than one year.
See Note 4 &#8220;Operating Leases&#8221; for more information and disclosures regarding Solitario&#8217;s leases.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Fair value</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 820, <I>Fair Value measurement
(&#8220;ASC 820&#8221;)</I> established a framework for measuring fair value of financial instruments and required disclosures
about fair value measurements. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts
payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in
USTS, its marketable equity securities and any covered call options against those marketable equity securities are carried at their
estimated fair value based on quoted market prices. See Note 6, &#8220;Fair Value,&#8221; below.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Marketable equity securities</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario's investments in marketable
equity securities are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments
in marketable equity securities for investments in publicly traded marketable equity securities for which it does not exercise
significant control and where Solitario has no representation on the board of directors of those companies and exercises no control
over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification
method. Changes in fair value are recorded as unrealized gain or loss in the statement of operations.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Foreign exchange</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The United States dollar is the functional
currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2018 and
the first half of 2019 have been conducted primarily in Peru, a portion of the payments under the land, leasehold and exploration
agreements of Solitario are denominated in United States dollars. Realized foreign currency gains and losses are included in the
results of operations in the period in which they occur.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Income taxes</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for income taxes
in accordance with ASC 740, &#8220;Accounting for Income Taxes&#8221; (&#8220;ASC 740&#8221;). Under ASC 740, income taxes are
provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred
taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred
tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible
when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits
that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more
likely than not that some portion or all of the deferred tax assets will not be realized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Accounting for uncertainty in income taxes</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 740 clarifies the accounting
for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and
measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in
a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods,
disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has
completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the
tax position in the future.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Earnings per share</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The calculation of basic and diluted
earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the three and six
months ended June 30, 2019 and 2018. Potentially dilutive shares related to outstanding common stock options of 4,373,000 and 4,025,228
for Solitario common shares for the three and six months ended June 30, 2019 and 2018, respectively, were excluded from the calculation
of diluted earnings (loss) per share because the effects were anti-dilutive.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Employee stock compensation and incentive plans</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario classifies all of its stock
options as equity options in accordance with the provisions of ASC 718, &#8220;Compensation &#8211; Stock Compensation.&#8221;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><I>Recent accounting pronouncements</I></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin-right: 30.6pt; margin-left: 0">&nbsp;</P>

<P STYLE="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 1, 2019, Solitario
adopted Accounting Standards Update No. 2016-02 <I>Leases</I> (&#8220;ASU 2016-02&#8221;) which requires the application of ASC
842 and the recognition of right-of-use assets and related liabilities associated with all leases that are not short-term in nature.
As a result of the adoption of ASU 2016-02 on January 1, 2019, Solitario recorded both an operating lease asset for its Wheat
Ridge Colorado office of $82,000 and an operating lease liability of $82,000 related to the same lease. The adoption of ASU 2016-02
did not require the recording of any other assets or liabilities on our condensed consolidated balance sheets and had an immaterial
effect on Solitario&#8217;s condensed consolidated statement of operations for the three and six months ended June 30, 2019, and
its condensed consolidated statement of cash flows for the six months ended June 30, 2019. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption, as the initial date of transition and not to restate
comparative prior periods and to carry forward historical lease classification. See Note 4 &#8220;Operating Leases&#8221; for
more information and disclosures regarding Solitario&#8217;s leases.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"><B>2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mineral
Property</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following table details Solitario&#8217;s investment
in Mineral Property:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">June 30,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>Exploration</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 56%; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Lik project (Alaska &ndash; US)</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">15,611</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">15,611</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;La Promesa (Peru)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">6</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">6</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Montana Royalty property (US)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">40</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total exploration mineral property</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">15,617</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">15,657</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">All exploration costs on our exploration
properties, none of which have proven and probable reserves, including any additional costs incurred for subsequent lease payments
or exploration activities related to our projects are expensed as incurred.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><U>Royalty Sale</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 22, 2019, Solitario completed
the Royalty Sale, discussed above under &#8220;Recent Developments&#8221; to SilverStream for Cdn$600,000. On closing of the Royalty
Sale, Solitario received Cdn$250,000 in cash and the SilverStream Note with a principal amount of Cdn$350,000, with a maturity
date of December 31, 2019. During the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 from
the Royalty Sale, consisting of the fair value of the cash received on the date of the sale of $185,000 and the fair value of the
SilverStream Note on the date of the sale of $263,000 less the carrying value of the royalties sold of $40,000.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0.5in; text-indent: -0.5in"><U>Exploration expense</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">The following items comprised exploration expense:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid">(in thousands)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center; border-bottom: Black 1pt solid">Three months ended<BR> &nbsp;June 30,</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center; border-bottom: Black 1pt solid">Six months ended<BR> &nbsp;June 30,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: left; padding-left: 5.4pt">Geologic and field expenses</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">680</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">21</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">827</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">45</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-bottom: 1pt; padding-left: 5.4pt">Administrative</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">22</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">141</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">38</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">297</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Total exploration costs</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">702</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">162</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">865</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">342</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><U>Asset Retirement Obligation</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In connection with the acquisition
of its interest in the Lik project in 2017, Solitario has recorded an asset retirement obligation of $125,000 as of June 30, 2019
and December 31, 2018 for Solitario&#8217;s estimated reclamation cost of the existing disturbance at the Lik project. This disturbance
consists of an exploration camp including certain drill sites and access roads at the camp. The estimate is based upon Solitario&#8217;s
estimated cash costs for reclamation. Solitario has purchased a reclamation bond insurance policy for the bonding required by the
State of Alaska, in the event Solitario or its 50% partner, Teck, do not complete any required reclamation.</P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 6pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has not applied a discount
rate to the recorded asset retirement obligation as the estimated time frame for reclamation is not currently known, as reclamation
is not expected to occur until the end of the Lik project life, which would follow future development and operations, the start
of which cannot be estimated or assured at this time.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>3. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Marketable
Equity Securities</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario's investments in marketable
equity securities are carried at fair value, which is based upon quoted prices of the securities owned. The cost of marketable
equity securities sold is determined by the specific identification method. Changes in market value are recorded in the condensed
consolidated statement of operations. During the three and six months ended June 30, 2019, Solitario recorded an unrealized loss
on marketable equity securities of $63,000 and $389,000, respectively. During the three and six months ended June 30, 2018, Solitario
recorded an unrealized loss on marketable equity securities of $222,000 and $663,000, respectively.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The following tables summarize Solitario&#8217;s
marketable equity securities and adjustments to fair value:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify; border-bottom: Black 1pt solid">(in thousands)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">June 30, <BR>2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">December 31, <BR>2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 56%; text-align: left">&nbsp;&nbsp;Marketable equity securities at cost</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">1,714</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">1,714</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt">&nbsp;&nbsp;Cumulative unrealized loss on marketable equity securities</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(518</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(129</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt">&nbsp;&nbsp;Marketable equity securities at fair value</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">1,196</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">1,585</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following table represents changes, including sales,
in marketable equity securities during the three and six months ended June 30, 2019 and 2018:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">Three months ended<BR> June 30,</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">Six months ended<BR> June 30,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Gross (loss) recorded in the statement of operations</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">(63</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">(222</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">(389</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="width: 3%; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="width: 1%; border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="width: 10%; border-bottom: Black 1pt solid; text-align: right">(663</TD><TD STYLE="width: 1%; padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Change in marketable equity securities at fair value</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(63</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(222</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(389</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(663</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario did not sell any marketable
equity securities during the three and six months ended June 30, 2019 or 2018 and the change in the fair value of marketable equity
securities was related entirely to the unrealized loss on marketable equity securities related to their fair values based upon
quoted market prices for the marketable equity securities held by Solitario during the periods.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Operating
Leases</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario adopted ASU 2016-02 effective
January 1, 2019 and accounts for its leases in accordance with ASC 842. Solitario leases one facility, its Wheat Ridge, Colorado
office (the &#8220;WR Lease&#8221;), that has a term of more than one year. Solitario has no other material operating lease costs.
The WR Lease is classified as an operating lease and has a term of 20 months at June 30, 2019, with no renewal option. At June
30, 2019, the right-of-use office lease asset for the WR Lease is classified as other assets and the related liability separated
between current and non-current office lease liabilities in the condensed consolidated balance sheet. Lease expense is recognized
on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred.
During the three and six months ended June 30, 2019, Solitario recognized $10,000 and $20,000, respectively, of non-cash lease
expense for the WR Lease included in general and administrative expense. Cash lease payments of $7,000 and $17,000, respectively,
were made on the WR Lease during the three and six months ended June 30, 2019 and this amount, less $1,000 and $2,000, respectively,
of imputed interest during the three and six months ended June 30, 2019, reduced the related liability on the WR Lease. The discount
rate within the WR Lease is not determinable and Solitario has applied a discount rate of 5% based upon Solitario&#8217;s estimate
of its cost of capital.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The maturities of Solitario&#8217;s lease liability for
its WR Lease are as follows at June 30, 2019:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid">Lease payments per year</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 70%; text-align: right; padding-left: 5.4pt">2019</TD><TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 18%; text-align: right">20</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: right; padding-left: 5.4pt">2020</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">42</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: right; padding-bottom: 1pt; padding-left: 5.4pt">2021</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">7</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Total lease payments</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">69</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;Less amount of payments representing interest</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(2</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-bottom: 1pt; padding-left: 5.4pt">Present value of lease payments</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">67</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following is supplemental cash flow information related
to our operating lease for the six months ended June 30, 2019:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid">(in thousands)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Six months ended June 30, 2019</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Cash paid for amounts included in the measurement of lease liabilities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 70%; text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Operating cash outflows from WR Lease payments</TD><TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 18%; text-align: right">17</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Non-cash amounts related to the WR lease</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">&nbsp;&nbsp;&nbsp;Leased assets recorded in exchange for new operating lease liabilities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">82</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other
Assets</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">The following items comprised other assets:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">June 30,</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">December 31</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 56%; text-align: left; padding-left: 5.4pt">Furniture and fixtures, net of accumulated depreciation</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">33</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 8%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 12%; text-align: right">36</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Lik project equipment, net of accumulated depreciation</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">60</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">70</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Exploration bonds and other assets</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">4</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">4</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Office lease asset</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">64</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Total other assets</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">161</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">110</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>6.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Fair
Value</B></P>

<P STYLE="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in; background-color: white">Solitario
accounts for its financial instruments under ASC 820. For certain of Solitario&#8217;s financial instruments, including cash and
cash equivalents and payables, the carrying amounts approximate fair value due to their short-term maturities. Solitario&#8217;s
short-term investments in USTS, and marketable equity securities are carried at their estimated fair value primarily based on quoted
market prices. During the three and six months ended June 30, 2019 there were no reclassifications in financial assets or liabilities
between Level 1, 2 or 3 categories.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The following is a listing of Solitario&#8217;s
financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within
the hierarchy as of June 30, 2019:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify; border-bottom: Black 1pt solid">(in thousands)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right; border-bottom: Black 1pt solid">Level 1</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right; border-bottom: Black 1pt solid">Level 2</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right; border-bottom: Black 1pt solid">Level 3</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: right; border-bottom: Black 1pt solid">Total</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold">Assets</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 40%; text-align: left">&nbsp;&nbsp;Short-term investments</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">8,714</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">8,714</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;&nbsp;Marketable equity securities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">1,196</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">1,196</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-indent: 0.5in">The following is a listing of Solitario&#8217;s
financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within
the hierarchy as of December 31, 2018:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify; border-bottom: Black 1pt solid">(in thousands)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Level 1</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Level 2</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Level 3</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Total</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold">Assets</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="width: 40%; text-align: left">&nbsp;&nbsp;Short-term investments</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">10,223</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">10,223</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;&nbsp;Marketable equity securities</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">1,585</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">1,585</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income
Taxes</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for income taxes
in accordance with ASC 740. Under ASC 740, income taxes are provided for the tax effects of transactions reported in the financial
statements and consist of taxes currently due plus deferred taxes related to certain income and expenses recognized in different
periods for financial and income tax reporting purposes. Deferred tax assets and liabilities represent the future tax return consequences
of those differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred
taxes are also recognized for operating losses and tax credits that are available to offset future taxable income and income taxes,
respectively. A valuation allowance is provided if it is more likely than not that some portion or all of the deferred tax assets
will not be realized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">At June 30, 2019 and December 31,
2018, a valuation allowance has been recorded, which fully offsets Solitario&#8217;s net deferred tax assets, because it is more
likely than not that the Company will not realize some portion or all of its deferred tax assets.&nbsp; The Company continually
assesses both positive and negative evidence to determine whether it is more likely than not that the deferred tax assets can be
realized prior to their expiration.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">During the three and six months ended
June 30, 2019 and 2018, Solitario recorded no current or deferred tax expense.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>8.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Commitments
and contingencies</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded an asset retirement
obligation of $125,000 related to its Lik project in Alaska. See Note 2, &#8220;Mineral Property,&#8221; above.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In August of 2018, Solitario agreed
to fund a portion of a 2018 &#8211; 2019 drilling program at the Florida Canyon project. Pursuant to the agreement, Solitario will
fund up to $1,580,000 of a planned 41-hole 17,000-meter drilling program to be conducted through December 31, 2019 (the &#8220;Drilling
Program&#8221;). Upon Nexa completing the first 1,700 meters of the Drilling Program, Solitario will pay Nexa $527,000, upon completion
of the next 1,700 meters (3,400 meters total) of the Drilling Program, Solitario will pay Nexa $527,000, and upon completion of
the next 1,700 meters (5,100 meters total) of the Drilling Program, Solitario will pay Nexa the balance remaining on its $1,580,000
funding commitment, or $526,000. Solitario has no obligation to pay Nexa prior to the attainment of the separate 1,700-meter thresholds.
The funding commitments are in the form of an advance on Solitario&#8217;s commitment to fund 30% of any future development of
Florida Canyon under the existing joint venture agreement with Nexa. Accordingly, in the event Florida Canyon is developed, which
cannot be assured at this time, any funds paid to Nexa under this agreement, will reduce the amount of Solitario&#8217;s obligation
to fund 30% of future development costs, and / or repay loans from Nexa for future development costs at the Florida Canyon project.
During 2018, Nexa completed a total of 2,203 meters under the Drilling Program and Solitario recorded a charge to exploration expense
of $527,000, which Solitario paid during 2019. During the six months ended June 30, 2019, Nexa completed additional drilling to
meet the second required meter threshold of 1,700 meters (or a total of 3,400 meters). Solitario recorded a charge to exploration
expense of $527,000 during the three and six months ended June 30, 2019 and Solitario has recorded an account payable as of June
30, 2019 to Nexa of $527,000, which was paid in July 2019 for the completion of this second phase of the drilling during the six
months ended June 30, 2019. Should Nexa complete the remaining 1,700 meters (5,100 meters less the completed 3,400 meters) during
the remainder of 2019, Solitario will be obligated to pay Nexa the final tranche under the agreement of $526,000 during the remainder
of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>9.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Employee
Stock Compensation Plans</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On June 18, 2013, Solitario&#8217;s
shareholders approved the 2013 Solitario Exploration &amp; Royalty Corp. Omnibus Stock and Incentive Plan (the &#8220;2013 Plan&#8221;).
Under the terms of the 2013 Plan, a total of 1,750,000 shares of Solitario common stock were reserved for awards to directors,
officers, employees and consultants. On June 29, 2017, Solitario shareholders approved an amendment to the 2013 Plan, which increased
the number of shares of common stock available for issuance under the 2013 Plan from 1,750,000 to 5,750,000. Awards granted under
the 2013 Plan may take the form of stock options, stock appreciation rights, restricted stock, and restricted stock units. The
terms and conditions of the awards are pursuant to the 2013 Plan and are granted by the Board of Directors or a committee appointed
by the Board of Directors.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">As of June 30, 2019, and December
31, 2018 there were options outstanding that are exercisable to acquire 4,373,000 and 5,223,160 shares, respectively, of Solitario
common stock, with option prices between $0.28 and $0.77 per share. During the three months ended June 30, 2019 and 2018 Solitario
did not grant any additional options. During the six months ended June 30, 2019, Solitario granted options exercisable to acquire
150,000 shares of common stock, with an exercise price of $0.28 per share, a five-year term, and a grant date fair value of $23,000
based upon a Black-Scholes model, with a 64% volatility and a 2.4% risk-free interest rate. In addition, during the six months
ended June 30, 2019, options exercisable to acquire 1,000,160 shares of common stock, with exercise prices between $1.68 and $0.70
per share, expired unexercised. During the six months ended June 30, 2018, Solitario granted options exercisable to acquire 100,000
shares of common stock to a consultant, with an exercise price of $0.62 per share, a seven-month term and a grant date fair value
of $12,000 based upon a Black-Scholes model with a 66% volatility and a 1% risk-free interest rate. There were no exercises of
options under the 2013 Plan during the three and six months ended June 30, 2019 and 2018. During the three and six months ended
June 30, 2019, Solitario recorded stock option compensation expense of $85,000 and $173,000, respectively. During the three and
six months ended June 30, 2018, Solitario recorded non-cash stock option compensation expense of $432,000 and $442,000, respectively.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On September 1, 2017, the Board of
Directors granted, subject to shareholder approval at the next meeting of shareholders, 2,300,000 stock options under the 2013
Plan to officers and members of the Board of Directors (the &#8220;Conditional Options&#8221;). The Conditional Options were approved
at Solitario&#8217;s annual meeting on June 19, 2018. The Conditional Options have a five-year life, an exercise price of $0.77
per share, and a grant date fair value of $970,000, based upon a Black-Scholes model with a volatility of 64%, and a risk-free
interest rate of 1.70%. The Conditional Options vest on the schedule of 25% on date of approval of the grant (June 19, 2018) and
25% on each of the next three anniversary dates of the date of grant (September 1, 2018, 2019 and 2020).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">At June 30, 2019, the total unrecognized
stock option compensation cost related to non-vested options is $487,000 and is expected to be recognized over a weighted average
period of 19 months.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><B>10.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shareholders&#8217;
Equity</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Shareholders&#8217; Equity for the six months ended
June 30, 2018:</U></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands, except</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Accumulated</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>Share amounts)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Common</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Common</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Additional</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Other</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Total</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Stock</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Stock</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Paid-in</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Accumulated</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Comprehensive</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Shareholders&rsquo;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Shares</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Amount</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Capital</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Deficit</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Income</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Equity</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; font-weight: bold; padding-left: 5.4pt">Balance at December 31, 2017</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">58,434,566</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">584</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">69,312</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">(40,343</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">)</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">576</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 6%; font-weight: bold; text-align: right">30,129</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Cumulative-effect adjustment <BR>change in accounting principle</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">576</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(576</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-left: 5.4pt">Adjusted balance January 1, 2018</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">58,434,566</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">584</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">69,312</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">(39,767</TD><TD STYLE="font-weight: bold; text-align: left">)</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">30,129</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Stock option expense</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">442</TD><TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">442</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">Purchase of shares for cancellation</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(145,200</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(1</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(64</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(65</TD><TD STYLE="text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Net loss</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,617</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,617</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-bottom: 1pt; padding-left: 5.4pt">Balance at June 30, 2018</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">58,289,366</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">583</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">69,690</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">(41,384</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">)</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">28,889</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">Solitario adopted Accounting Standards Update No. 2016-01
<I>Recognition and Measurement of Financial Assets and Financial Liabilities </I>(&#8220;ASU 2016-01&#8221;) in the first quarter
of 2018. ASU No. 2016-01 revised the classification and measurement of investment in certain equity investments and the presentation
of certain fair value changes for certain financial liabilities measured at fair value. ASU No. 2016-01 requires the change in
fair value of many equity investments to be recognized in net income. Solitario recorded a cumulative-effect adjustment for the
change in accounting principle to retained earnings of $576,000 related to the adoption of ASU 2016-01.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Shareholders&#8217; Equity for the six months ended
June 30, 2019:</U></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD>(in thousands, except</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>Share amounts)</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Common</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Common</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Additional</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Total</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Stock</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Stock</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Paid-in</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Accumulated</TD><TD>&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center">Shareholders&rsquo;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Shares</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Amount</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Capital</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Deficit</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">Equity</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 35%; font-weight: bold; padding-left: 5.4pt">Balance at December 31, 2018</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 9%; font-weight: bold; text-align: right">58,171,466</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 9%; font-weight: bold; text-align: right">582</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 9%; font-weight: bold; text-align: right">69,873</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 9%; font-weight: bold; text-align: right">(43,365</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">)</TD><TD STYLE="width: 2%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 1%; font-weight: bold; text-align: left">$</TD><TD STYLE="width: 9%; font-weight: bold; text-align: right">27,090</TD><TD STYLE="width: 1%; font-weight: bold; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-left: 5.4pt">Stock option expense</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">173</TD><TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="font-weight: bold; text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">173</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-left: 5.4pt">Purchase of shares for cancellation</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(33,200</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(1</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(10</TD><TD STYLE="text-align: left">)</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">(11</TD><TD STYLE="text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left; padding-bottom: 1pt; padding-left: 5.4pt">Net loss</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">&mdash;&nbsp;&nbsp;</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,443</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">(1,443</TD><TD STYLE="padding-bottom: 1pt; text-align: left">)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-weight: bold; padding-bottom: 1pt; padding-left: 5.4pt">Balance at June 30, 2019</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">58,138,266</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">581</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">70,036</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">(44,808</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">)</TD><TD STYLE="font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; font-weight: bold; text-align: right">25,809</TD><TD STYLE="padding-bottom: 1pt; font-weight: bold; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><U>Share Repurchase Program</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On October 28, 2015, Solitario&#8217;s
Board of Directors approved a share repurchase program that authorized Solitario to purchase up to two million shares of its outstanding
common stock. During 2018, Solitario&#8217;s Board of Directors extended the expiration date of the share repurchase program through
December 31, 2019. During the three months ended June 30, 2019 and 2018, Solitario purchased 5,300 and 92,566 shares of Solitario
common stock, respectively, for an aggregate purchase price of $2,000 and $39,000, respectively. During the six months ended June
30, 2019 and 2018, Solitario purchased 33,200 and 145,200 shares of Solitario common stock, respectively, for an aggregate purchase
price of $11,000 and $65,000, respectively. As of June 30, 2019, Solitario has purchased a total of 964,100 shares for an aggregate
purchase price of $460,000 under the share repurchase program since its inception.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Item 2.&nbsp;&nbsp;&nbsp;<U>Management&#8217;s
Discussion and Analysis of Financial Condition and Results of Operations</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">The following discussion should be
read in conjunction with the information contained in the consolidated financial statements of Solitario for the years ended December
31, 2018 and 2017, and Management&#8217;s Discussion and Analysis of Financial Condition and Results of Operations contained in
Solitario&#8217;s Annual Report on Form 10-K for the year ended December 31, 2018. Solitario's financial condition and results
of operations are not necessarily indicative of what may be expected in future periods. Unless otherwise indicated, all references
to dollars are to U.S. dollars.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left">(a) Business Overview and Summary</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We are an exploration stage company
under Industry Guide 7, as issued by the SEC, with a focus on the acquisition of precious and base metal properties with exploration
potential and the development or purchase of royalty interests. . Currently our primary focus is the acquisition and exploration
of zinc-related exploration mineral properties. However, we will continue to evaluate other mineral properties for acquisition
and hold a portfolio of mineral exploration properties and assets for future sale, joint venture or to create a royalty prior to
the establishment of proven and probable reserves. Although our mineral properties may be developed in the future by us, through
a joint venture or by a third party, we have never developed a mineral property. In addition to focusing on our current mineral
exploration properties, we also from time to time evaluate potential strategic transactions for the acquisition of new precious
and base metal properties and assets with exploration potential.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Our geographic focus for the evaluation
of potential mineral property assets is in North and South America; however, we have conducted property evaluations for potential
acquisition in other parts of the world. Our exploration properties may be developed in the future by us or through a joint venture,
although we have never developed a mineral property. At June 30, 2019, we consider our carried interest in the Florida Canyon project
in Peru and our interest in the Lik project in Alaska to be our core mineral property assets. In addition, at June 30, 2019, we
have one exploration property in Peru. We are conducting independent exploration activities in Peru and through joint ventures
operated by our partners in Peru and the United States. We conduct potential acquisition evaluations in other countries located
in South and North America.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We have recorded revenue in the past
from the sale of mineral properties, including the Royalty Sale and the sale in June 2018 of our interest in the royalty on the
Yanacocha property. In addition, we have received proceeds from the sale in 2015 of our former interest in MH-LLC the owner of
our former Mt. Hamilton project, and joint venture property payments and the sale of a royalty on our former Mt. Hamilton project.
Revenues and / or proceeds from the sale or joint venture of properties or assets, although generally significant when they occur,
have not been a consistent source of revenue and would only occur in the future, if at all, on an infrequent basis. We have reduced
our exposure to the costs of our exploration activities in the past through the use of joint ventures. Although we anticipate that
the use of joint venture funding for some of our exploration activities will continue for the foreseeable future, we can provide
no assurance that these or other sources of capital will be available in sufficient amounts to meet our needs, if at all.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><FONT STYLE="color: windowtext">As
of June 30, 2019, we have significant balances of cash and short-term investments that we anticipate using, in part, to (i) further
the development of the Lik project, (ii) fund exploration, including drilling at the Florida Canyon project, and conduct reconnaissance
exploration and (iii) potentially acquire additional mineral property assets. The</FONT> fluctuations in precious metal and other
commodity prices contribute to a challenging environment for mineral exploration and development, which has created opportunities
as well as challenges for the potential acquisition of advanced mineral exploration projects or other related assets at potentially
attractive terms.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left"></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left">(b) Results of Operations</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Comparison of the quarter ended June 30, 2019 to the
quarter ended June 30, 2018</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We had a net loss of $1,002,000
or $0.02 per basic and diluted share for the three months ended June 30, 2019 compared to a net loss of $613,000 or $0.01 per
basic and diluted share for the three months ended June 30, 2018. As explained in more detail below, the primary reasons for the
increase in the net loss in the three months ended June 30, 2019 compared to the net loss in the three months ended June 30, 2018
were (i) the mineral property revenue, net, of $502,000 during the three months ended June 30, 2018 with no similar mineral property
revenue during the three months ended June 30, 2019; and (ii) an increase in exploration expense to $702,000 during the three
months ended June 30, 2019, primarily related to the drilling completed by Nexa at the Florida Canyon project, compared to $162,000
in exploration expense during the three months ended June 30, 2018, when we were primarily doing reconnaissance exploration. Partially
offsetting the above items which increased the net loss, were (i) a reduction in the non-cash loss on unrealized loss on marketable
equity securities to $63,000 during the three months ended June 30, 2019 compared to a non-cash unrealized loss on marketable
equity securities of $222,000 during the three months ended June 30, 2018; (ii) a decrease in general and administrative expense
to $321,000 during the three months ended June 30, 2019 compared to general and administrative expense of $762,000 during the
three months ended June 30, 2018; and (iii) an increase in interest income (net) to $90,000 during the three months ended June
30, 2019 compared to interest income of $37,000 during the three months ended June 30, 2018. Each of the major components of these
items is discussed in more detail below.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
net exploration expense increased to $702,000 during the three months ended June 30, 2019 compared to exploration expense of $162,000
during the three months ended June 30, 2018. During the three months ended June 30, 2019, Nexa met the second required total drilling
target of 3,400 meters of drilling at the Florida Canyon project and Solitario was responsible for $527,000 of the total drilling
costs incurred by Nexa, with Nexa responsible for any excess. We recorded $527,000 of exploration expense during the three months
ended June 30, 2019 related to the drilling at Florida Canyon and recorded an account payable of the same amount, which was paid
to Nexa in July of 2019. There was no similar item during the three months ended June 30, 2018. In addition, we incurred $24,000
of exploration expense at our Lik project in Alaska during the three months ended June 30, 2019 compared to Lik project expenditures
of $10,000 during the three months ended June 30, 2018 and we incurred $35,000 of exploration expense related to permitting and
site work at our La Promesa project in Peru, compared to $23,000 of exploration expense at La Promesa during the six months ended
June 30, 2018. During the three and six months ended June 30, 2019 we had three contract geologists in Peru, and our Denver personnel
spent a majority of their time on reconnaissance exploration activities described above and related matters. We anticipate Nexa
will complete the 2019 exploration program at our Florida Canyon project during the third quarter of 2019, as discussed above in
Note 8, &#8220;Commitments and Contingencies.&#8221; Should Nexa complete the drilling program as budgeted, we anticipate we will
record the final amount due under the program of $526,000 in exploration expense at Florida Canyon during the third quarter of
2019. In addition, we have budgeted approximately $178,000 for our share of exploration at our Lik project in Alaska for the full
year of 2019, which the bulk of those expenses are planned for the third and fourth quarter of 2019. As a result, we expect our
full-year exploration expenditures for 2019 to exceed the expenditures for full-year 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Exploration expense (in thousands)
by project for the three and six months ended June 30, 2019 and 2018 consisted of the following:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify">&nbsp;</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">Three months ended <BR>June 30,</TD><TD>&nbsp;</TD>
    <TD COLSPAN="7" STYLE="text-align: center">Six months ended <BR>June 30,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-align: justify; border-bottom: Black 1pt solid">Project Name</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2019</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-align: center; border-bottom: Black 1pt solid">2018</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: justify; padding-left: 5.4pt">Florida Canyon</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">535</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">7</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">535</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">21</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">Lik</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">24</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">10</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">43</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">25</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 5.4pt">La Promesa</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">35</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">23</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">59</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">52</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-bottom: 1pt; padding-left: 5.4pt">Reconnaissance</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">108</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">122</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">228</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">244</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-bottom: 1pt; padding-left: 5.4pt">&nbsp;&nbsp;Total exploration expense</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">702</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">162</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">865</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD><TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: left">$</TD><TD STYLE="border-bottom: Black 1pt solid; text-align: right">342</TD><TD STYLE="padding-bottom: 1pt; text-align: left">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">General and administrative costs,
excluding stock option compensation costs, discussed below, were $236,000 during the three months ended June 30, 2019 compared
to $330,000 during the three months ended June 30, 2018. The major components of these costs were related to (i) salaries and
benefit expense of $108,000 during the three months ended June 30, 2019 compared to salary and benefit costs of $162,000 during
the three months ended June 30, 2018, as we have reduced staff and taken salary reductions during 2019; (ii) legal and accounting
expenditures of $54,000 in the three months ended June 30, 2019 compared to $85,000 during the three months ended June 30, 2018;
(iii) office and other expenses of $27,000 during the three months ended June 30, 2019, compared to $35,000 during the three months
ended June 30, 2018; and (iv) travel and shareholder relation costs of $48,000 during the three months ended June 30, 2019 compared
to $47,000 during the three months ended June 30, 2018. We anticipate the general and administrative costs will be incurred at
comparable quarterly amounts for the remainder of 2019.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We recorded $85,000 of stock option
expense for the amortization of unvested grant date fair value with a credit to additional paid-in-capital during the three months
ended June 30, 2019 compared to $432,000 of stock option compensation expense during the three months ended June 30, 2018. The
decrease was primarily related to $422,000 of stock option expense recorded during the three months ended June 30, 2018, for the
amortization of vested grant date fair value for the Conditional Options which were granted on September 1, 2017, but were subject
to shareholder approval, which was received on June 19, 2018 as discussed in Note 9, &#8220;Employee Stock Compensation Plans,&#8221;
above. We anticipate our stock option expense related to vesting of grant date fair value for the remainder of 2019 will be comparable
to the expense incurred through June 30, 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We recorded an unrealized loss on
marketable equity securities of $63,000 during the three months ended June 30, 2019 compared to an unrealized loss on marketable
equity securities of $222,000 during the three months ended June 30, 2018. The loss during each of the three months ended June
30, 2019 and 2018 was primarily related to a decrease in the value of our holdings of 11,000,000 shares of Vendetta common stock
which decreased from a fair value, based on quoted market prices, of $906,000 and $1,792,000, respectively, at March 31, 2019 and
2018, to a fair value of $800,000 and $1,589,000, respectively at June 30, 2019 and 2018. During the three months ended June 30,
2019 the value of our holdings of 100,000 shares of Kinross Gold Corp (&#8220;Kinross&#8221;) common stock increased in value based
upon quoted market prices by $43,000, compared to a loss of $19,000 during the three months ended June 30, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We recorded interest income of $90,000
during the three months ended June 30, 2019 compared to interest income of $37,000 during the three months ended June 30, 2018
primarily due to (i) an increase in the value of our short-term investments in USTS as a result of a decrease in interest rates
during the three months ended June 30, 2019, which increases the value of existing USTS, and (ii) the average interest rates on
our existing short term investments was still higher during the three months ended June 30, 2019 than the average interest rates
on our short term investments during the three months ended June 30, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We regularly perform evaluations
of our mineral property assets to assess the recoverability of our investments in these assets. All long-lived assets are reviewed
for impairment whenever events or circumstances change which indicate the carrying amount of an asset may not be recoverable utilizing
guidelines based upon future net cash flows from the asset as well as our estimates of the geological potential of an early stage
mineral property and its related value for future sale, joint venture or development by us or others. During the three and six
months ended June 30, 2019 and 2018, we recorded no property impairments.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">At June 30, 2019 and 2018, our net
operating loss carryforwards exceeded our taxable gains resulting in a net tax asset position for which we provide a valuation
allowance for all net deferred tax assets. We recorded no income tax expense or benefit during the three and six months ended June
30, 2019 or 2018. As a result of our exploration activities, we anticipate we will not have currently payable income taxes during
2019. In addition to the valuation allowance discussed above, we provide a valuation allowance for our foreign net operating losses,
which are primarily related to our exploration activities in Peru. We anticipate we will continue to provide a valuation allowance
for these net operating losses until we are in a net tax liability position with regards to those countries where we operate or
until it is more likely than not that we will be able to realize those net operating losses in the future.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Comparison of the six months ended June 30, 2019 to
the six months ended June 30, 2018</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We had a net loss of $1,443,000
or $0.02 per basic and diluted share for the six months ended June 30, 2019 compared to a net loss of $1,617,000 or $0.03 per
basic and diluted share for the six months ended June 30, 2018. As explained in more detail below, the primary reasons for the
decrease in our net loss were (i) a decrease in general and administrative costs to $746,000 during the six months ended June
30, 2019, compared to general and administrative expenses of $1,165,000 including $442,000 of non-cash stock option compensation
expense, discussed above, during the six months ended June 30, 2018; (ii) a reduction in the unrealized loss on marketable equity
securities to $389,000 during the six months ended June 30, 2019 compared to an unrealized loss on marketable equity securities
of $663,000 during the six months ended June 30, 2018; and (iii) an increase in interest income to $162,000 during the six months
ended June 30, 2019 compared to interest income of $63,000 during the six months ended June 30, 2018. These causes of the decrease
in our net loss during the period were partially offset by (i) an increase in exploration expense to $865,000 during the six months
ended June 30, 2019 compared to exploration expense of $342,000 during the six months ended June 30, 2018; and (ii) the reduction
in mineral property sale revenue to $408,000 from the Royalty Sale compared to the mineral property sale revenue of $502,000 from
the Yanacocha Royalty sold during the six months ended June 30, 2018; The significant changes for these items are discussed in
more detail below.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">During the six months ended June
30, 2019, we completed the Royalty Sale and recorded net revenues of $408,000. During the six months ended June 30, 2018 we sold
our interest in our Yanacocha royalty property to Newmont Mining Corporation for $502,000 in cash, discussed in &#8220;Recent Developments&#8221;
in our Form 10-K for the year ended December 31, 2018. We do not anticipate additional significant property sales during the remainder
of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Our net exploration expense increased
to $865,000 during the six months ended June 30, 2019 compared to $342,000 during the six months ended June 30, 2018. The primary
reason for the increase was the recording of $527,000 of exploration expense for the completion of drilling by Nexa in excess of
the 3,400 meter threshold at the Florida Canyon project during the first six months of 2019, discussed above. The remaining changes
in exploration expense for the six-month periods of 2019 and 2018 are shown above, by property and reconnaissance exploration,
and are not significantly different between the six months ended June 30, 2019 and June 30, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">General and administrative costs,
excluding stock option compensation costs discussed below, were $573,000 during the six months ended June 30, 2019 compared to
$723,000 during the six months ended June 30, 2018. The major components of the costs were (i) salaries and benefit expense during
the six months ended June 30, 2019 of $215,000 compared to salaries and benefit expense of $319,000 during the six months ended
June 30, 2018 as a result of personnel and salary reductions; (ii) legal and accounting expenditures of $106,000 during the six
months ended June 30, 2019, compared to $127,000 during the six months ended June 30, 2018; (iii) office and other costs of $70,000
during the six months ended June 30, 2019 compared to $76,000 during the six months ended June 30, 2018; and (iv) travel and shareholder
relation costs of $181,000 during the six months ended June 30, 2019 compared to $201,000 during the six months ended June 30,
2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">During the six months ended June
30, 2019 and 2018, Solitario recorded $173,000 and $442,000, respectively, of stock option expense for the amortization of unvested
grant date fair value with a credit to additional paid-in capital. The large decrease was related to the stock option expense for
the Conditional Options recorded during the six months ended June 30, 2018, as discussed above.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We recorded an unrealized loss on
marketable equity securities of $389,000 during the six months ended June 30, 2019 compared to an unrealized loss on marketable
equity securities of $663,000 during the six months ended June 30, 2018. The non-cash unrealized loss during the six months ended
June 30, 2019 and 2018 was primarily related to a decrease in the value of our holdings of 11,000,000 shares of Vendetta common
stock which decreased from a fair value of $1,249,000 and 2,191,000, respectively, at December 31, 2018 and 2017 to a fair value
of $800,000 and $1,589,000, respectively, at June 30, 2019 and 2018 based on quoted market prices. We may look to reduce our holdings
of marketable equity securities as a source of cash flow over the next year, which may reduce the volatility of the changes in
unrealized gains and losses in marketable equity securities during the remainder of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">During the six months ended June
30, 2019 our interest income on short-term investments increased to $162,000 compared to interest income of $63,000 for the six
months ended June 30, 2018 primarily as a result of the effects of lower interest rates on the quoted market price of our USTS
holdings as well as a slightly increased average interest rate received on USTS invested during 2019 compared to 2018. We anticipate
as we utilize our short-term investments to provide funds for exploration and general and administrative expenses, our interest
income will be reduced during the remainder of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left">(c) Liquidity and Capital Resources</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Cash and Short-term Investments</U></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">As of June 30, 2019, we have $9,278,000
in cash and short-term investments. As of June 30, 2019, we have invested $8,714,000 of our current assets in USTS with maturities
of 15 days to 18 months. The USTS are recorded at their fair value, based upon quoted market prices. We anticipate we will roll
over that portion of our USTS not used for exploration expenditures, operating costs or mineral property acquisitions as they become
due during the remainder of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We intend to utilize a portion of
our cash and short-term investments in our exploration activities and the potential acquisition of mineral assets over the next
several years. We also expect to use a portion of our cash to repurchase shares of our common stock pursuant to the terms of a
stock buy-back program announced on October 28, 2015, and discussed above in Note 10, &#8220;Shareholders&#8217; Equity,&#8221;
to the unaudited consolidated financial statements. The stock buy-back program may be terminated at any time and does not require
Solitario to purchase a minimum number of shares.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Investment in Marketable Equity Securities</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Our marketable equity securities
are carried at fair value, which is based upon market quotes of the underlying securities. At June 30, 2019 we own 11,000,000 shares
of Vendetta common stock and 100,000 shares of Kinross common stock. The Vendetta shares are recorded at their fair market value
of $800,000 and the Kinross shares are recorded at their fair value of $388,000 at June 30, 2019. In addition, we own other marketable
equity securities with a fair market value of $8,000 at June 30, 2019. We did not sell any of our marketable equity securities
during the three and six months ended June 30, 2019 or 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Working Capital</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We had working capital of $10,184,000
at June 30, 2019 compared to working capital of $11,448,000 as of December 31, 2018. Our working capital at June 30, 2019 consists
primarily of our cash and cash equivalents, our investment in USTS and our investment in marketable equity securities of $1,196,000,
other current assets of $416,000, which include the SilverStream Note of $267,000 at June 30, 2019, less our current liabilities
of $706,000, which consist of accounts payable and the current portion of our operating lease liability. As of June 30, 2019, our
cash balances along with our short-term investments and marketable equity securities are adequate to fund our expected expenditures
over the next year.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">The nature of the mineral exploration
business requires significant sources of capital to fund exploration, development and operation of mining projects. We will need
additional capital if we decide to develop or operate any of our current exploration projects or any projects or assets we may
acquire. We anticipate we would finance any such development through the use of our cash reserves, short-term investments, joint
ventures, issuance of debt or equity, or the sale of other exploration projects or assets.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Stock-Based Compensation Plans</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">As of June 30, 2019, and December
31, 2018 there were options outstanding that are exercisable to acquire 4,373,000 and 2,028,428 shares of Solitario common stock,
respectively, with exercise prices between $0.77 per share and $0.28 per share. We do not anticipate the exercise of options to
be a significant source of cash flow during the remainder of 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>Share Repurchase Program</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">On October 28, 2015, our Board of
Directors approved a share repurchase program that authorized us to purchase up to two million shares of our outstanding common
stock. During 2018, our Board of Directors extended the term of the share repurchase program until December 31, 2019. All shares
purchased to date have been cancelled and reduced the number of shares of outstanding common stock. The amount and timing of any
shares purchased has been and will be determined by our management and the purchases will be effected in the open market or in
privately negotiated transactions based upon market conditions and other factors, including price, regulatory requirements and
capital availability and in compliance with applicable state and federal securities laws. Purchases may also be made in accordance
with Rule 10b-18 of the Securities Exchange Act of 1934, as amended (the &#8220;1934 Act&#8221;). The repurchase program does
not require the purchase of any minimum number of shares of common stock by the Company, and may be suspended, modified or discontinued
at any time without prior notice. No purchases will be made outside of the United States, including on the TSX. Payments for shares
of common stock repurchased under the program have been funded using the Company&#8217;s working capital. As of June 30, 2019,
Solitario has purchased a total of 964,100 shares for an aggregate purchase price of $460,000 under the share repurchase program
since its inception and these shares are no longer included in our issued and outstanding shares. We anticipate we will continue
to purchase a limited number of shares under the share repurchase plan during the remainder of 2019 as determined by management.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left">(d) Cash Flows</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Net cash used in operations during
the six months ended June 30, 2019 increased to $995,000 compared to $440,000 during the six months ended June 30, 2018 primarily
as a result of (i) the cash outflows of $527,000 for the Nexa drilling exploration expense incurred during 2018, and paid during
the second quarter of 2019, with no comparable exploration cash use during the six months ended June 30, 2018; and (ii) the receipt
of $185,000 in cash on the mineral property revenue related to the Royalty Sale, compared to the receipt of $502,000 in cash from
the Yanacocha royalty property sale, discussed above, during 2018. Partially offsetting these increases in usages of operating
cash were (i) a decrease in non-stock option general and administrative expense to $573,000 during the six months ended June 30,
2019 compared to $723,000 during the six months ended June 30, 2018, discussed above; and (ii) an increase in cash interest income
during the six months ended June 30, 2018 compared to the six months ended June 30, 2018. Based upon projected expenditures in
our 2019 budget, we anticipate continued use of funds from operations through the remainder of 2019, primarily for exploration
related to our Florida Canyon project and our Lik project and reconnaissance exploration. See &#8220;Results of Operations&#8221;
discussed above for further explanation of some of these variances.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">During the six months ended June
30, 2019, $1,453,000 in cash was provided from investing activities compared to the provision of $501,000 of cash from investing
activities during the six months ended June 31, 2018. The primary sources of cash related to the net proceeds from short-term investment
sales and purchases of $1,453,000 and $509,000, respectively, during the six months ended June 30, 2019 and 2018. During the six
months ended June 30, 2018 we purchased $8,000 of office equipment. We do not anticipate significant sales of marketable equity
securities during the remainder of 2019. However, we will continue to liquidate a portion of our investments in USTS as needed
to fund our operations and potential mineral property acquisitions during the remainder of 2019. Any potential mineral property
acquisition or strategic corporate investment during the remainder of 2019, discussed above under &#8220;Business Overview and
Summary,&#8221; could involve a significant change in our cash provided or used for investing activities, depending on the structure
of any potential transaction.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We used $11,000 and $65,000, respectively,
in financing activities for the purchase of our common stock during the six months ended June 30, 2019 and 2018, as discussed above
under &#8220;Share Repurchase Program&#8221; in &#8220;Liquidity and Capital Resources.&#8221; We anticipate the use of funds for
additional purchases of our common stock during the remainder of 2019, however, this will be limited to the maximum number of shares,
permissible under the share repurchase program.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(e) Off-balance sheet arrangements</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">As of June 30, 2019, and December
31, 2018 we have no off-balance sheet obligations.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(f) Development Activities, Exploration Activities,
Environmental Compliance and Contractual Obligations</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We are not involved in any development
activities, nor do we have any contractual obligations related to any potential development activities as of June 30, 2019. As
of June 30, 2019, there have been no changes to our exploration activities, environmental compliance or other contractual obligations
from those disclosed in our Management&#8217;s Discussion and Analysis included in our Annual Report on Form 10-K for the year
ended December 31, 2018.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(g) Discontinued Projects</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">We sold our Brazil, Mexico and Montana
royalty properties during the six months ended June 30, 2019 in the Royalty Sale. We did not record any mineral property write-downs
during the three and six months ended June 30, 2019 and 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(h) Critical Accounting Estimates</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Management&#8217;s Discussion and
Analysis of Financial Condition and Results of Operations and Note 1 to the Consolidated Financial Statements included in our Annual
Report on Form 10-K for the year ended December 31, 2018, describe the significant accounting estimates and policies used in preparation
of our consolidated financial statements. Actual results in these areas could differ from management&#8217;s estimates.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(i) Related Party Transactions</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">As of June 30, 2019, and for the
three and six months ended June 30, 2019, we have no related party transactions or balances.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(j) Recent Accounting Pronouncements</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">See Note 1, &#8220;Business and Summary
of Significant Accounting Policies,&#8221; to the unaudited consolidated financial statements under &#8220;<I>Recent Accounting
Pronouncements&#8221;</I> above for a discussion of recent accounting pronouncements.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>(k) Forward Looking Statements</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">This Form 10-Q contains forward-looking
statements, within the meaning of Section&nbsp;27A of the Securities Act of 1933, as amended and Section&nbsp;21E of the 1934 Act
with respect to our financial condition, results of operations, business prospects, plans, objectives, goals, strategies, future
events, capital expenditures, and exploration and development efforts. Words such as &#8220;anticipates,&#8221; &#8220;expects,&#8221;
&#8220;intends,&#8221; &#8220;forecasts,&#8221; &#8220;plans,&#8221; &#8220;believes,&#8221; &#8220;seeks,&#8221; &#8220;estimates,&#8221;
&#8220;may,&#8221; &#8220;will,&#8221; and similar expressions identify forward-looking statements. These forward-looking statements
are based on our current expectations and assumptions about future events and are based on currently available information as to
the outcome and timing of future events. When considering forward-looking statements, you should keep in mind the risk factors
and other cautionary statements described under the heading &quot;Risk Factors&quot; included in Item 1A of Part&nbsp;I of our
Annual Report on Form&nbsp;10-K for the year ended December 31, 2018.&nbsp;These forward-looking statements appear in a number
of places in this report and include statements with respect to, among other things:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our estimates of the
value and recovery of our short-term investments;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our estimates of future
exploration, development, general and administrative and other costs;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our ability to realize
a return on our investment in the Lik project;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our ability to successfully
identify and execute on transactions to acquire new mineral exploration properties and other related assets;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our estimates of fair
value of our investment in shares of Vendetta and Kinross;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our estimate of the
collectability of the SilverStream Note:</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our expectations regarding
development and exploration of our properties, including those properties subject to joint venture and shareholder agreements;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The impact of political
and regulatory developments;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our future financial
condition or results of operations and our future revenues and expenses; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/115% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD><TD STYLE="padding-right: 0.55in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Our business strategy
and other plans and objectives for future operations.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/115% Times New Roman, Times, Serif; margin: 0 0.55in 0 1in; text-indent: -0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Although we have attempted to identify
important factors that could cause actual results to differ materially from those described in forward-looking statements, there
may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that these statements
will prove to be accurate as actual results and future events could differ materially from those anticipated in the statements.
Except as required by law, we assume no obligation to publicly update any forward-looking statements, whether as a result of new
information, future events or&nbsp;otherwise.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>




<P STYLE="font: 10pt/89% Times New Roman, Times, Serif; margin: 0 0.55in 0 0">Item 3.&nbsp;&nbsp;&nbsp;<U>Quantitative and Qualitative
Disclosures about Market Risk</U></P>

<P STYLE="font: 10pt/85% Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Smaller Reporting Companies are not
required to provide the information required by this item.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0in">Item 4.&nbsp;&nbsp;&nbsp;<U>Controls
and Procedures</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><I>Disclosure Controls and Procedures</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">As required by Rule 13a-15 under
the 1934 Act, as of June 30, 2019, we carried out an evaluation of the effectiveness of the design and operation of our disclosure
controls and procedures. This evaluation was carried out under the supervision and with the participation of our Chief Executive
Officer (our principal executive officer) and our Chief Financial Officer (our principal financial officer). Based upon and as
of the date of that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls
and procedures were effective as of June 30, 2019.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">Disclosure controls and procedures
are controls and other procedures that are designed to ensure that information required to be disclosed in our reports filed or
submitted under the 1934 Act is recorded, processed, summarized and reported within the time periods specified in the SEC&#8217;s
rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that
information required to be disclosed in our reports filed under the 1934 Act is accumulated and communicated to our management,
including our principal executive officer and our principal financial officer, as appropriate, to allow timely decisions regarding
required disclosure.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: justify"><I>Changes in Internal Control Over
Financial Reporting</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 7.5pt; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">There were no changes in our internal
control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) promulgated under the 1934 Act) during the quarter
ended June 30, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial
reporting.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">PART II - OTHER INFORMATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 1.</TD><TD><U>Legal Proceedings</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">None</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 1A.</TD><TD STYLE="padding-right: 0.55in"><U>Risk Factors</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">There are no material changes to
the Risk Factors associated with our business disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended
December 31, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 2.</TD><TD STYLE="padding-right: 0.55in"><U>Unregistered Sales of Equity Securities and Use of Proceeds</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 35.1pt 0 0">The following table provides information about our purchase
of our common shares under the share repurchase program during the three months ended June 30, 2019.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD COLSPAN="17" STYLE="font-weight: bold; text-align: center">Issuer Purchases of Equity Securities</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="font-size: 8pt; font-weight: bold">Period</TD><TD STYLE="font-size: 8pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 8pt; font-weight: bold">Total Number of Shares Purchased</TD><TD STYLE="font-size: 8pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 8pt; font-weight: bold">Average Price Paid Per Share</TD><TD STYLE="font-size: 8pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 8pt; font-weight: bold">Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs</TD><TD STYLE="font-size: 8pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="font-size: 8pt; font-weight: bold"><FONT STYLE="font-size: 8pt"><B>Maximum number of Shares that May Yet Be Purchased Under the Plans or Programs<SUP>(1)</SUP></B></FONT></TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 40%; text-align: justify; padding-left: 3pt">April 1, 2019- April 30, 2019</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 10%; text-align: right">700</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">$</TD><TD STYLE="width: 10%; text-align: right">0.41</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 10%; text-align: right">700</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 10%; text-align: right">1,040,500</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: justify; padding-left: 3pt">May 1, 2019 &ndash; May 31, 2019</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">2,904</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">0.36</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">2,904</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,037,596</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: justify; padding-left: 3pt">June 1, 2019 &ndash; June 30, 2019</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,696</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">$</TD><TD STYLE="text-align: right">0.30</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,696</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">1,035,900</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(1)</TD><TD STYLE="padding-right: 35.1pt">As of June 30, 2019, we have purchased a total of 964,100 shares of common stock for an aggregate
purchase price of $460,000 under the share repurchase program and these shares are no longer included in our issued and outstanding
shares.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 3.</TD><TD STYLE="padding-right: 0.55in"><U>Defaults upon Senior Securities</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">None</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 4.</TD><TD STYLE="padding-right: 0.55in"><U>Mine Safety Disclosures</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">None</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 5.</TD><TD STYLE="padding-right: 0.55in"><U>Other Information</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">None</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in">Item 6.</TD><TD STYLE="padding-right: 0.55in"><U>Exhibits</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">The Exhibits to this report are listed
in the Exhibit Index.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center; text-indent: 0.5in"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">Pursuant to the requirements of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">SOLITARIO ZINC CORP.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="width: 48%; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><U>July 30, 2019</U></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">Date</P></TD>
    <TD STYLE="width: 9%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">By:</TD>
    <TD ROWSPAN="3" STYLE="width: 43%; padding-right: 5.45pt; padding-left: 5.4pt; layout-grid-mode: line"><U>/s/ James R. Maronick</U><BR>
James R. Maronick<BR>
Chief Financial Officer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line; text-align: justify">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-align: center"><B>EXHIBIT INDEX</B></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0.25in 0 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 18%; text-align: right">3.1</TD><TD STYLE="width: 1%; text-align: left">&nbsp;</TD><TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 70%; text-align: left; padding-left: 5.4pt">Amended and Restated Articles of Incorporation of Solitario Exploration &amp; Royalty Corp., as Amended (incorporated by reference to Exhibit 3.1 to Solitario&rsquo;s Form 10-Q filed on August 10, 2010)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">3.1.1</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Articles of Amendment to Restated Articles of Incorporation of Solitario Zinc Corp. (incorporated by reference to Exhibit 3.1 to Solitario&rsquo;s Current Report on Form 8-K filed on July 14, 2017)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">3.2</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Amended and Restated By-laws of Solitario Zinc Corp. (Solitario Exploration &amp; Royalty Corp.) (incorporated by reference to Exhibit 99.1 to Solitario&rsquo;s Form 10-K filed on March 22, 2013)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">4.1</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Form of Common Stock Certificate of Solitario Zinc Corp. (incorporated by reference to Exhibit 4.1 to Solitario&rsquo;s Form 10-Q filed on November 8, 2017)</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">31.1</TD><TD STYLE="text-align: left">*</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Certification of Chief Executive Officer pursuant to SEC Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">31.2</TD><TD STYLE="text-align: left">*</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Certification of Chief Financial Officer pursuant to SEC Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">32.1</TD><TD STYLE="text-align: left">*</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">101</TD><TD STYLE="text-align: left">*</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">The following financial statements, formatted in XBRL: (i) Condensed Consolidated Balance Sheets as of June 30, 2019 and December&nbsp;31, 2018, (ii) Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2019 and 2018, (iii) Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2019 and 2018; and (iv) Notes to the Condensed Unaudited Consolidated Financial Statements, tagged as blocks of text.</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: right">*</TD><TD STYLE="text-align: left">&nbsp;</TD><TD>&nbsp;</TD>
    <TD STYLE="text-align: left; padding-left: 5.4pt">Filed herewith</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><B>&nbsp;</B></P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><B>Exhibit 31.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>CERTIFICATIONS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">I, Christopher E. Herald, certify that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
have reviewed this quarterly report on Form 10-Q of Solitario Zinc Corp. for the six months ended June 30, 2019;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based
on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to
the period covered by this report;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based
on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented
in this report;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures
(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and internal control over financial reporting (as
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) and we have:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a)
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this report is being prepared;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b)
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted accounting principles;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c)
Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on
such evaluation; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d)
Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's
most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected,
or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial
reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the
equivalent functions):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which
are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information;
and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's
internal control over financial reporting.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; color: #333333">Date: July30, 2019</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; color: #333333">By: /s/ Christopher E. Herald<BR>
        Christopher E. Herald<BR>
        President and Chief Executive Officer</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>exh312.htm
<DESCRIPTION>CERTIFICATIONS
<TEXT>
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<BODY>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><B>Exhibit 31.2</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>CERTIFICATIONS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">I, James R. Maronick, certify that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
have reviewed this quarterly report on Form 10-Q of Solitario Zinc Corp. for the six months ended June 30, 2019;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based
on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to
the period covered by this report;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based
on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented
in this report;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures
(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and internal control over financial reporting (as
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) and we have:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a)
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this report is being prepared;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b)
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted accounting principles;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c)
Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on
such evaluation; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d)
Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's
most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected,
or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial
reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the
equivalent functions):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which
are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information;
and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.75in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's
internal control over financial reporting.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; padding-right: 5.4pt; padding-left: 5.4pt; font: 10pt Times New Roman, Times, Serif; layout-grid-mode: line"><FONT STYLE="color: #333333">Date: July 30, 2019</FONT><BR>
<FONT STYLE="color: #333333">By: /s/ James R. Maronick</FONT><BR>
<FONT STYLE="color: #333333">James R. Maronick</FONT><BR>
<FONT STYLE="color: #333333">Chief Financial Officer</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>4
<FILENAME>exh32.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO
<TEXT>
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<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-align: right"><B>Exhibit 32</B></P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-align: center"><B>CERTIFICATION PURSUANT TO</B></P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-align: center"><B>18 U.S.C. SECTION 1350,</B></P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-align: center"><B>AS ADOPTED PURSUANT TO</B></P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SECTION 906 OF THE SARBANES-OXLEY ACT
OF 2002</B></P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">In connection with the Annual Report of Solitario Zinc Corp.
(the &quot;Company&quot;) on Form 10-Q for the period ended June 30, 2019, as filed with the Securities and Exchange Commission
on the date hereof (the &quot;Report&quot;), we, Christopher E. Herald, Chief Executive Officer, and James R. Maronick, Chief Financial
Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that
to our knowledge:</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934.</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
information contained in the Report fairly presents, in all material respects, the financial condition and results of operations
of the Company.</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Calibri, Helvetica, Sans-Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%">&nbsp;</TD>
    <TD STYLE="width: 50%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/<U>Christopher E. Herald&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/<U>James R. Maronick&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">Christopher E. Herald</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">James R. Maronick</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">Chief Executive Officer</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 115%"><FONT STYLE="font-family: Times New Roman, Times, Serif">Chief Financial Officer</FONT></TD></TR>
</TABLE>
<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">Dated: July 30, 2019</P>

<P STYLE="font: 11pt/115% Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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    <us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="margin: 0pt"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&lt;b&gt;1.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Business&#13;and Significant Accounting Policies&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Business and company formation&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario Zinc Corp. (&amp;#8220;Solitario,&amp;#8221;&#13;or the &amp;#8220;Company&amp;#8221;) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities&#13;and Exchange Commission (&amp;#8220;SEC&amp;#8221;). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly&#13;owned subsidiary of Crown Resources Corporation (&amp;#34;Crown&amp;#34;). In July 1994, Solitario became a publicly traded company on&#13;the Toronto Stock Exchange (the &amp;#34;TSX&amp;#34;) through its initial public offering. Solitario has been actively involved in mineral&#13;exploration since 1993. Solitario&amp;#8217;s primary business is to acquire exploration mineral properties or royalties and/or discover&#13;economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the&#13;development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties,&#13;pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations,&#13;or create a royalty with a third party that continues to advance the property. Solitario is primarily focused on the acquisition&#13;and exploration of zinc-related exploration mineral properties, however Solitario will evaluate and potentially acquire other base&#13;and precious metal mineral exploration properties. In addition to focusing on its mineral exploration properties, Solitario also&#13;evaluates potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration&#13;potential or business combinations that Solitario determines to be favorable to Solitario.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recorded revenue in&#13;the past from the sale of mineral properties, including the sale of certain mineral royalty properties in January 2019, discussed&#13;below, and the sale in June 2018 of its interest in the royalty on the Yanacocha property. Revenues and / or proceeds from the&#13;sale or joint venture of properties or assets have not been a consistent annual source of cash and would only occur in the future,&#13;if at all, on an infrequent basis.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario currently considers its&#13;carried interest in the Florida Canyon project and its interest in the Lik project to be its core mineral property assets. Nexa&#13;Resources, Ltd. (&amp;#8220;Nexa&amp;#8221;), Solitario&amp;#8217;s joint venture partner, is continuing the exploration and furtherance of&#13;the Florida Canyon project and Solitario is monitoring progress at Florida Canyon. Solitario is working with its 50% joint venture&#13;partner, Teck American Incorporated, a wholly owned subsidiary of Teck Resources Limited (both companies are referred to as &amp;#8220;Teck&amp;#8221;),&#13;in the Lik deposit to further the exploration of, and to evaluate potential development plans, for the Lik project.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&lt;font style="color: windowtext"&gt;As&#13;of June 30, 2019, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part,&#13;to further the exploration of the Florida Canyon and Lik projects and to potentially acquire additional mineral property assets.&#13;The&lt;/font&gt; fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration&#13;and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced&#13;mineral exploration projects or other related assets at potentially attractive terms.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The accompanying interim condensed&#13;consolidated financial statements of Solitario for the three and six months ended June 30, 2019 are unaudited and are prepared&#13;in accordance with accounting principles generally accepted in the United States of America (&amp;#8220;generally accepted accounting&#13;principles&amp;#8221;). They do not include all disclosures required by generally accepted accounting principles for annual financial&#13;statements, but in the opinion of management, include all adjustments, consisting only of normal recurring items, necessary for&#13;a fair presentation. Interim results are not necessarily indicative of results, which may be achieved in the future or for the&#13;full year ending December 31, 2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;These financial statements should&#13;be read in conjunction with the financial statements and notes thereto which are included in Solitario&amp;#8217;s Annual Report on&#13;Form 10-K for the year ended December 31, 2018. The accounting policies set forth in those annual financial statements are the&#13;same as the accounting policies utilized in the preparation of these financial statements, except as modified for appropriate interim&#13;financial statement presentation.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Recent Developments&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;u&gt;Royalty sale&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On January 22, 2019, Solitario completed&#13;the sale of its interest in certain royalties to SilverStream SEZC, a private Cayman Island royalty and streaming company (&amp;#8220;SilverStream&amp;#8221;)&#13;for Cdn$600,000 (the &amp;#8220;Royalty Sale&amp;#8221;). The Royalty Sale covered (i) a royalty on the formerly Solitario-owned 125,000-acre&#13;polymetallic Pedra Branca palladium, platinum, gold, nickel, cobalt and chrome project in Brazil, (ii) a royalty covering 3,880-acres&#13;of non-producing exploration properties in Mexico, and (iii) a purchase option on 11 separate non-producing properties covering&#13;over 16,500 acres in Montana. On closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and a convertible note from&#13;SilverStream in the principal amount of Cdn$350,000 (the &amp;#8220;SilverStream Note&amp;#8221;). The SilverStream Note is due December&#13;31, 2019, accrues 5% per annum simple interest, payable on a quarterly basis, and is convertible into common shares of SilverStream,&#13;at the discretion of SilverStream, by providing Solitario a notice of conversion. Solitario recorded interest income of $3,000&#13;and $6,000, respectively, from the SilverStream Note during the three and six months ended June 30, 2019. SilverStream may only&#13;provide a notice of conversion if SilverStream has completed an initial public offering during the term of the SilverStream Note&#13;for minimum proceeds of Cdn$5,000,000, otherwise the SilverStream note will be payable in cash at the maturity date. Pursuant to&#13;the terms of the SilverStream Note, if converted, Solitario would receive common shares converted at 85% of the weighted average&#13;quoted price of a share of SilverStream common stock for the most recent 10-day period prior to the notice of conversion. During&#13;the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of&#13;the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date&#13;of the sale of $263,000 less the carrying value of the royalties sold of $40,000. As of June 30, 2019, the approximate fair value&#13;of the SilverStream Note was $267,000, based upon the current US Dollar / Canadian Dollar exchange rate, and Solitario recorded&#13;a credit to exchange gain and loss of $4,000, included in general and administrative expense during the six months ended June 30,&#13;2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Financial reporting&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The consolidated financial statements&#13;include the accounts of Solitario and its wholly owned subsidiaries. All significant intercompany accounts and transactions have&#13;been eliminated in consolidation. The consolidated financial statements are prepared in accordance with generally accepted accounting&#13;principles and are expressed in U.S. dollars.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Revenue recognition&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recorded revenue from&#13;the sale of exploration mineral properties and joint venture property payments. Solitario&amp;#8217;s policy is to recognize revenue&#13;from the sale of its exploration mineral properties (those without reserves) on a property by property basis, computed as the cash&#13;received and / or expected collectable receivables less any capitalized cost. Payments received for the sale of exploration property&#13;interests that are less than the properties cost are recorded as a reduction of the related property's capitalized cost. In addition,&#13;Solitario&amp;#8217;s policy is to recognize revenue on any receipts of joint venture property payments in excess of its capitalized&#13;costs on a property that Solitario may lease to another mining company.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recognized revenue&#13;during the six months ended June 30, 2019 of $408,000 related to the Royalty Sale, discussed above, in accordance with Accounting&#13;Standards Codification (&amp;#8220;ASC&amp;#8221;) 606. In addition, Solitario recorded revenue during the second quarter of 2018 of $502,000&#13;from the sale of its Yanacocha exploration mineral property. Solitario expects any property or asset sales in the future to be&#13;on an infrequent basis. Prior to the sale of its Yanacocha exploration mineral property, the last proceeds from joint venture property&#13;payments was in 2015 and Solitario does not expect to record joint venture property payments on any of its currently held properties&#13;for the foreseeable future.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Use of estimates&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The preparation of financial statements&#13;in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the&#13;reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements&#13;and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.&#13;Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to: (i) Solitario&amp;#8217;s&#13;carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral exploration properties&#13;and their future exploration potential; (iii) the fair value of stock option grants to employees, to officers and directors and&#13;to others; (iv) the ability of Solitario to realize its deferred tax assets; (v) the collectability of the SilverStream Note; and&#13;(vi) Solitario's investment in marketable equity securities.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;In performing its activities, Solitario&#13;has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral&#13;property interests or the development of economically recoverable ore reserves and the ability of Solitario or its joint venture&#13;partners to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable&#13;operations, none of which is assured.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Cash equivalents &lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Cash equivalents include investments&#13;in highly liquid money-market securities with original maturities of three months or less when purchased. As of June 30, 2019,&#13;$553,000 of Solitario&amp;#8217;s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered&#13;under the Federal Deposit Insurance Corporation (&amp;#8220;FDIC&amp;#8221;) rules for the United States.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Short-term investments&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;As of June 30, 2019, Solitario has&#13;$8,714,000 of its current assets in United States Treasury Securities (&amp;#8220;USTS&amp;#8221;) with maturities of 15 days to 18 months.&#13;The USTS are recorded at their fair value, based upon quoted market prices and are not covered under the FDIC insurance rules for&#13;United States deposits, with increases or decreases in fair market value recorded as interest income in the statement of operation&#13;in the period. Solitario&amp;#8217;s USTS are highly liquid and may be sold in their entirety at any time at their quoted market price&#13;and are classified as a current asset.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Mineral properties &lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario expenses all exploration&#13;costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a&#13;feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations&#13;of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets.&#13;All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of&#13;an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset&#13;or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Leases&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario accounts for its leases&#13;in accordance with ASC 842, &lt;i&gt;Leases&lt;/i&gt; (&amp;#8220;ASC 842&amp;#8221;) by recognizing right-of-use assets and lease liabilities on the&#13;condensed consolidated balance sheet and disclosing key information about lease arrangements. Solitario has elected the practical&#13;expedient option to use January 1, 2019, the effective date of adoption of ASC 842, as the initial date of transition and not to&#13;restate comparative prior periods and to carry forward historical lease classification. In addition, Solitario has elected the&#13;option not to apply the recognition of assets and liabilities provisions of ASC 842 to operating leases of less than one year.&#13;See Note 4 &amp;#8220;Operating Leases&amp;#8221; for more information and disclosures regarding Solitario&amp;#8217;s leases.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Fair value&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;ASC 820, &lt;i&gt;Fair Value measurement&#13;(&amp;#8220;ASC 820&amp;#8221;)&lt;/i&gt; established a framework for measuring fair value of financial instruments and required disclosures&#13;about fair value measurements. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts&#13;payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in&#13;USTS, its marketable equity securities and any covered call options against those marketable equity securities are carried at their&#13;estimated fair value based on quoted market prices. See Note 6, &amp;#8220;Fair Value,&amp;#8221; below.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Marketable equity securities&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario's investments in marketable&#13;equity securities are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments&#13;in marketable equity securities for investments in publicly traded marketable equity securities for which it does not exercise&#13;significant control and where Solitario has no representation on the board of directors of those companies and exercises no control&#13;over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification&#13;method. Changes in fair value are recorded as unrealized gain or loss in the statement of operations.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Foreign exchange&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The United States dollar is the functional&#13;currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2018 and&#13;the first half of 2019 have been conducted primarily in Peru, a portion of the payments under the land, leasehold and exploration&#13;agreements of Solitario are denominated in United States dollars. Realized foreign currency gains and losses are included in the&#13;results of operations in the period in which they occur.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Income taxes&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario accounts for income taxes&#13;in accordance with ASC 740, &amp;#8220;Accounting for Income Taxes&amp;#8221; (&amp;#8220;ASC 740&amp;#8221;). Under ASC 740, income taxes are&#13;provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred&#13;taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred&#13;tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible&#13;when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits&#13;that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more&#13;likely than not that some portion or all of the deferred tax assets will not be realized.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Accounting for uncertainty in income taxes&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;ASC 740 clarifies the accounting&#13;for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and&#13;measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in&#13;a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods,&#13;disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has&#13;completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the&#13;tax position in the future.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Earnings per share&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The calculation of basic and diluted&#13;earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the three and six&#13;months ended June 30, 2019 and 2018. Potentially dilutive shares related to outstanding common stock options of 4,373,000 and 4,025,228&#13;for Solitario common shares for the three and six months ended June 30, 2019 and 2018, respectively, were excluded from the calculation&#13;of diluted earnings (loss) per share because the effects were anti-dilutive.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Employee stock compensation and incentive plans&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario classifies all of its stock&#13;options as equity options in accordance with the provisions of ASC 718, &amp;#8220;Compensation &amp;#8211; Stock Compensation.&amp;#8221;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Recent accounting pronouncements&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 12pt Times New Roman, Times, Serif; margin-right: 30.6pt; margin-left: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On January 1, 2019, Solitario&#13;adopted Accounting Standards Update No. 2016-02 &lt;i&gt;Leases&lt;/i&gt; (&amp;#8220;ASU 2016-02&amp;#8221;) which requires the application of ASC&#13;842 and the recognition of right-of-use assets and related liabilities associated with all leases that are not short-term in nature.&#13;As a result of the adoption of ASU 2016-02 on January 1, 2019, Solitario recorded both an operating lease asset for its Wheat Ridge&#13;Colorado office of $82,000 and an operating lease liability of $82,000 related to the same lease. The adoption of ASU 2016-02 did&#13;not require the recording of any other assets or liabilities on our condensed consolidated balance sheets and had an immaterial&#13;effect on Solitario&amp;#8217;s condensed consolidated statement of operations for the three and six months ended June 30, 2019, and&#13;its condensed consolidated statement of cash flows for the six months ended June 30, 2019. Solitario has elected the practical&#13;expedient option to use January 1, 2019, the effective date of adoption, as the initial date of transition and not to restate comparative&#13;prior periods and to carry forward historical lease classification. See Note 4 &amp;#8220;Operating Leases&amp;#8221; for more information&#13;and disclosures regarding Solitario&amp;#8217;s leases.&lt;/p&gt;&#13;&#13;&#13;&#13;&lt;p style="margin: 0pt"&gt;&lt;/p&gt;</us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock>
    <us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&lt;b&gt;1.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Business&#13;and Significant Accounting Policies&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Business and company formation&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario Zinc Corp. (&amp;#8220;Solitario,&amp;#8221;&#13;or the &amp;#8220;Company&amp;#8221;) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities&#13;and Exchange Commission (&amp;#8220;SEC&amp;#8221;). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly&#13;owned subsidiary of Crown Resources Corporation (&amp;#34;Crown&amp;#34;). In July 1994, Solitario became a publicly traded company on&#13;the Toronto Stock Exchange (the &amp;#34;TSX&amp;#34;) through its initial public offering. Solitario has been actively involved in mineral&#13;exploration since 1993. Solitario&amp;#8217;s primary business is to acquire exploration mineral properties or royalties and/or discover&#13;economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the&#13;development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties,&#13;pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations,&#13;or create a royalty with a third party that continues to advance the property. Solitario is primarily focused on the acquisition&#13;and exploration of zinc-related exploration mineral properties, however Solitario will evaluate and potentially acquire other base&#13;and precious metal mineral exploration properties. In addition to focusing on its mineral exploration properties, Solitario also&#13;evaluates potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration&#13;potential or business combinations that Solitario determines to be favorable to Solitario.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recorded revenue in&#13;the past from the sale of mineral properties, including the sale of certain mineral royalty properties in January 2019, discussed&#13;below, and the sale in June 2018 of its interest in the royalty on the Yanacocha property. Revenues and / or proceeds from the&#13;sale or joint venture of properties or assets have not been a consistent annual source of cash and would only occur in the future,&#13;if at all, on an infrequent basis.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario currently considers its&#13;carried interest in the Florida Canyon project and its interest in the Lik project to be its core mineral property assets. Nexa&#13;Resources, Ltd. (&amp;#8220;Nexa&amp;#8221;), Solitario&amp;#8217;s joint venture partner, is continuing the exploration and furtherance of&#13;the Florida Canyon project and Solitario is monitoring progress at Florida Canyon. Solitario is working with its 50% joint venture&#13;partner, Teck American Incorporated, a wholly owned subsidiary of Teck Resources Limited (both companies are referred to as &amp;#8220;Teck&amp;#8221;),&#13;in the Lik deposit to further the exploration of, and to evaluate potential development plans, for the Lik project.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&lt;font style="color: windowtext"&gt;As&#13;of June 30, 2019, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part,&#13;to further the exploration of the Florida Canyon and Lik projects and to potentially acquire additional mineral property assets.&#13;The&lt;/font&gt; fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration&#13;and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced&#13;mineral exploration projects or other related assets at potentially attractive terms.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The accompanying interim condensed&#13;consolidated financial statements of Solitario for the three and six months ended June 30, 2019 are unaudited and are prepared&#13;in accordance with accounting principles generally accepted in the United States of America (&amp;#8220;generally accepted accounting&#13;principles&amp;#8221;). They do not include all disclosures required by generally accepted accounting principles for annual financial&#13;statements, but in the opinion of management, include all adjustments, consisting only of normal recurring items, necessary for&#13;a fair presentation. Interim results are not necessarily indicative of results, which may be achieved in the future or for the&#13;full year ending December 31, 2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;These financial statements should&#13;be read in conjunction with the financial statements and notes thereto which are included in Solitario&amp;#8217;s Annual Report on&#13;Form 10-K for the year ended December 31, 2018. The accounting policies set forth in those annual financial statements are the&#13;same as the accounting policies utilized in the preparation of these financial statements, except as modified for appropriate interim&#13;financial statement presentation.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Recent Developments&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;u&gt;Royalty sale&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On January 22, 2019, Solitario completed&#13;the sale of its interest in certain royalties to SilverStream SEZC, a private Cayman Island royalty and streaming company (&amp;#8220;SilverStream&amp;#8221;)&#13;for Cdn$600,000 (the &amp;#8220;Royalty Sale&amp;#8221;). The Royalty Sale covered (i) a royalty on the formerly Solitario-owned 125,000-acre&#13;polymetallic Pedra Branca palladium, platinum, gold, nickel, cobalt and chrome project in Brazil, (ii) a royalty covering 3,880-acres&#13;of non-producing exploration properties in Mexico, and (iii) a purchase option on 11 separate non-producing properties covering&#13;over 16,500 acres in Montana. On closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and a convertible note from&#13;SilverStream in the principal amount of Cdn$350,000 (the &amp;#8220;SilverStream Note&amp;#8221;). The SilverStream Note is due December&#13;31, 2019, accrues 5% per annum simple interest, payable on a quarterly basis, and is convertible into common shares of SilverStream,&#13;at the discretion of SilverStream, by providing Solitario a notice of conversion. Solitario recorded interest income of $3,000&#13;and $6,000, respectively, from the SilverStream Note during the three and six months ended June 30, 2019. SilverStream may only&#13;provide a notice of conversion if SilverStream has completed an initial public offering during the term of the SilverStream Note&#13;for minimum proceeds of Cdn$5,000,000, otherwise the SilverStream note will be payable in cash at the maturity date. Pursuant to&#13;the terms of the SilverStream Note, if converted, Solitario would receive common shares converted at 85% of the weighted average&#13;quoted price of a share of SilverStream common stock for the most recent 10-day period prior to the notice of conversion. During&#13;the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of&#13;the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date&#13;of the sale of $263,000 less the carrying value of the royalties sold of $40,000. As of June 30, 2019, the approximate fair value&#13;of the SilverStream Note was $267,000, based upon the current US Dollar / Canadian Dollar exchange rate, and Solitario recorded&#13;a credit to exchange gain and loss of $4,000, included in general and administrative expense during the six months ended June 30,&#13;2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Financial reporting&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The consolidated financial statements&#13;include the accounts of Solitario and its wholly owned subsidiaries. All significant intercompany accounts and transactions have&#13;been eliminated in consolidation. The consolidated financial statements are prepared in accordance with generally accepted accounting&#13;principles and are expressed in U.S. dollars.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Revenue recognition&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recorded revenue from&#13;the sale of exploration mineral properties and joint venture property payments. Solitario&amp;#8217;s policy is to recognize revenue&#13;from the sale of its exploration mineral properties (those without reserves) on a property by property basis, computed as the cash&#13;received and / or expected collectable receivables less any capitalized cost. Payments received for the sale of exploration property&#13;interests that are less than the properties cost are recorded as a reduction of the related property's capitalized cost. In addition,&#13;Solitario&amp;#8217;s policy is to recognize revenue on any receipts of joint venture property payments in excess of its capitalized&#13;costs on a property that Solitario may lease to another mining company.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recognized revenue&#13;during the six months ended June 30, 2019 of $408,000 related to the Royalty Sale, discussed above, in accordance with Accounting&#13;Standards Codification (&amp;#8220;ASC&amp;#8221;) 606. In addition, Solitario recorded revenue during the second quarter of 2018 of $502,000&#13;from the sale of its Yanacocha exploration mineral property. Solitario expects any property or asset sales in the future to be&#13;on an infrequent basis. Prior to the sale of its Yanacocha exploration mineral property, the last proceeds from joint venture property&#13;payments was in 2015 and Solitario does not expect to record joint venture property payments on any of its currently held properties&#13;for the foreseeable future.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Use of estimates&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The preparation of financial statements&#13;in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the&#13;reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements&#13;and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.&#13;Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to: (i) Solitario&amp;#8217;s&#13;carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral exploration properties&#13;and their future exploration potential; (iii) the fair value of stock option grants to employees, to officers and directors and&#13;to others; (iv) the ability of Solitario to realize its deferred tax assets; (v) the collectability of the SilverStream Note; and&#13;(vi) Solitario's investment in marketable equity securities.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;In performing its activities, Solitario&#13;has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral&#13;property interests or the development of economically recoverable ore reserves and the ability of Solitario or its joint venture&#13;partners to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable&#13;operations, none of which is assured.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Cash equivalents &lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Cash equivalents include investments&#13;in highly liquid money-market securities with original maturities of three months or less when purchased. As of June 30, 2019,&#13;$553,000 of Solitario&amp;#8217;s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered&#13;under the Federal Deposit Insurance Corporation (&amp;#8220;FDIC&amp;#8221;) rules for the United States.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Short-term investments&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;As of June 30, 2019, Solitario has&#13;$8,714,000 of its current assets in United States Treasury Securities (&amp;#8220;USTS&amp;#8221;) with maturities of 15 days to 18 months.&#13;The USTS are recorded at their fair value, based upon quoted market prices and are not covered under the FDIC insurance rules for&#13;United States deposits, with increases or decreases in fair market value recorded as interest income in the statement of operation&#13;in the period. Solitario&amp;#8217;s USTS are highly liquid and may be sold in their entirety at any time at their quoted market price&#13;and are classified as a current asset.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Mineral properties &lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario expenses all exploration&#13;costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a&#13;feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations&#13;of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets.&#13;All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of&#13;an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset&#13;or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Leases&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario accounts for its leases&#13;in accordance with ASC 842, &lt;i&gt;Leases&lt;/i&gt; (&amp;#8220;ASC 842&amp;#8221;) by recognizing right-of-use assets and lease liabilities on the&#13;condensed consolidated balance sheet and disclosing key information about lease arrangements. Solitario has elected the practical&#13;expedient option to use January 1, 2019, the effective date of adoption of ASC 842, as the initial date of transition and not to&#13;restate comparative prior periods and to carry forward historical lease classification. In addition, Solitario has elected the&#13;option not to apply the recognition of assets and liabilities provisions of ASC 842 to operating leases of less than one year.&#13;See Note 4 &amp;#8220;Operating Leases&amp;#8221; for more information and disclosures regarding Solitario&amp;#8217;s leases.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Fair value&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;ASC 820, &lt;i&gt;Fair Value measurement&#13;(&amp;#8220;ASC 820&amp;#8221;)&lt;/i&gt; established a framework for measuring fair value of financial instruments and required disclosures&#13;about fair value measurements. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts&#13;payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in&#13;USTS, its marketable equity securities and any covered call options against those marketable equity securities are carried at their&#13;estimated fair value based on quoted market prices. See Note 6, &amp;#8220;Fair Value,&amp;#8221; below.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Marketable equity securities&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario's investments in marketable&#13;equity securities are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments&#13;in marketable equity securities for investments in publicly traded marketable equity securities for which it does not exercise&#13;significant control and where Solitario has no representation on the board of directors of those companies and exercises no control&#13;over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification&#13;method. Changes in fair value are recorded as unrealized gain or loss in the statement of operations.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Foreign exchange&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The United States dollar is the functional&#13;currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2018 and&#13;the first half of 2019 have been conducted primarily in Peru, a portion of the payments under the land, leasehold and exploration&#13;agreements of Solitario are denominated in United States dollars. Realized foreign currency gains and losses are included in the&#13;results of operations in the period in which they occur.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Income taxes&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario accounts for income taxes&#13;in accordance with ASC 740, &amp;#8220;Accounting for Income Taxes&amp;#8221; (&amp;#8220;ASC 740&amp;#8221;). Under ASC 740, income taxes are&#13;provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred&#13;taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred&#13;tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible&#13;when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits&#13;that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more&#13;likely than not that some portion or all of the deferred tax assets will not be realized.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Accounting for uncertainty in income taxes&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;ASC 740 clarifies the accounting&#13;for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and&#13;measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in&#13;a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods,&#13;disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has&#13;completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the&#13;tax position in the future.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Earnings per share&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The calculation of basic and diluted&#13;earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the three and six&#13;months ended June 30, 2019 and 2018. Potentially dilutive shares related to outstanding common stock options of 4,373,000 and 4,025,228&#13;for Solitario common shares for the three and six months ended June 30, 2019 and 2018, respectively, were excluded from the calculation&#13;of diluted earnings (loss) per share because the effects were anti-dilutive.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Employee stock compensation and incentive plans&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario classifies all of its stock&#13;options as equity options in accordance with the provisions of ASC 718, &amp;#8220;Compensation &amp;#8211; Stock Compensation.&amp;#8221;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;i&gt;Recent accounting pronouncements&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 12pt Times New Roman, Times, Serif; margin-right: 30.6pt; margin-left: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On January 1, 2019, Solitario&#13;adopted Accounting Standards Update No. 2016-02 &lt;i&gt;Leases&lt;/i&gt; (&amp;#8220;ASU 2016-02&amp;#8221;) which requires the application of ASC&#13;842 and the recognition of right-of-use assets and related liabilities associated with all leases that are not short-term in nature.&#13;As a result of the adoption of ASU 2016-02 on January 1, 2019, Solitario recorded both an operating lease asset for its Wheat Ridge&#13;Colorado office of $82,000 and an operating lease liability of $82,000 related to the same lease. The adoption of ASU 2016-02 did&#13;not require the recording of any other assets or liabilities on our condensed consolidated balance sheets and had an immaterial&#13;effect on Solitario&amp;#8217;s condensed consolidated statement of operations for the three and six months ended June 30, 2019, and&#13;its condensed consolidated statement of cash flows for the six months ended June 30, 2019. Solitario has elected the practical&#13;expedient option to use January 1, 2019, the effective date of adoption, as the initial date of transition and not to restate comparative&#13;prior periods and to carry forward historical lease classification. See Note 4 &amp;#8220;Operating Leases&amp;#8221; for more information&#13;and disclosures regarding Solitario&amp;#8217;s leases.&lt;/p&gt;</us-gaap:OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock>
    <us-gaap:InterestIncomeOther contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">6000</us-gaap:InterestIncomeOther>
    <us-gaap:InterestIncomeOther contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">3000</us-gaap:InterestIncomeOther>
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    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="From2019-01-01to2019-06-30" unitRef="Shares" decimals="INF">4373000</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="From2019-04-01to2019-06-30" unitRef="Shares" decimals="INF">4373000</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="From2018-04-01to2018-06-30" unitRef="Shares" decimals="INF">4025228</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
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    <us-gaap:OperatingLeaseRightOfUseAsset contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">82000</us-gaap:OperatingLeaseRightOfUseAsset>
    <us-gaap:MineralIndustriesDisclosuresTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"&gt;&lt;b&gt;2.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Mineral&#13;Property&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;The following table details Solitario&amp;#8217;s investment&#13;in Mineral Property:&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;June 30,&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;December 31,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Exploration&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Lik project (Alaska &amp;#8211; US)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$15,611&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$15,611&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;La Promesa (Peru)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;6&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;6&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Montana Royalty property (US)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;40&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Total exploration mineral property&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$15,617&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$15,657&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="width: 71%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in"&gt;All exploration costs on our exploration&#13;properties, none of which have proven and probable reserves, including any additional costs incurred for subsequent lease payments&#13;or exploration activities related to our projects are expensed as incurred.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;u&gt;Royalty Sale&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On January 22, 2019, Solitario completed&#13;the Royalty Sale, discussed above under &amp;#8220;Recent Developments&amp;#8221; to SilverStream for Cdn$600,000. On closing of the Royalty&#13;Sale, Solitario received Cdn$250,000 in cash and the SilverStream Note with a principal amount of Cdn$350,000, with a maturity&#13;date of December 31, 2019. During the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 from&#13;the Royalty Sale, consisting of the fair value of the cash received on the date of the sale of $185,000 and the fair value of the&#13;SilverStream Note on the date of the sale of $263,000 less the carrying value of the royalties sold of $40,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0.5in; text-indent: -0.5in"&gt;&lt;u&gt;Exploration expense&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;The following items comprised exploration expense:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Three months ended&lt;br /&gt;&#13;&amp;#160;June 30,&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Six months ended&lt;br /&gt;&#13;&amp;#160;June 30,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 50%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 11%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Geologic and field expenses&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$680&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;21&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$827&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;45&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Administrative&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;22&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;141&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;38&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;297&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total exploration costs&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$702&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$162&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$865&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$342&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;u&gt;Asset Retirement Obligation&lt;/u&gt;&lt;/p&gt;&#13;&#13;&#13;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;In connection with the acquisition&#13;of its interest in the Lik project in 2017, Solitario has recorded an asset retirement obligation of $125,000 as of June 30, 2019&#13;and December 31, 2018 for Solitario&amp;#8217;s estimated reclamation cost of the existing disturbance at the Lik project. This disturbance&#13;consists of an exploration camp including certain drill sites and access roads at the camp. The estimate is based upon Solitario&amp;#8217;s&#13;estimated cash costs for reclamation. Solitario has purchased a reclamation bond insurance policy for the bonding required by the&#13;State of Alaska, in the event Solitario or its 50% partner, Teck, do not complete any required reclamation.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has not applied a discount&#13;rate to the recorded asset retirement obligation as the estimated time frame for reclamation is not currently known, as reclamation&#13;is not expected to occur until the end of the Lik project life, which would follow future development and operations, the start&#13;of which cannot be estimated or assured at this time.&lt;/p&gt;</us-gaap:MineralIndustriesDisclosuresTextBlock>
    <us-gaap:PropertyPlantAndEquipmentTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;June 30,&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;December 31,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Exploration&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Lik project (Alaska &amp;#8211; US)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$15,611&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$15,611&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;La Promesa (Peru)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;6&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;6&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Montana Royalty property (US)&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;40&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Total exploration mineral property&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$15,617&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$15,657&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="width: 71%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:PropertyPlantAndEquipmentTextBlock>
    <XPL:MineralPropertyExplorationExpenseTableTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Three months ended&lt;br /&gt;&#13;&amp;#160;June 30,&lt;/td&gt;&#13;    &lt;td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Six months ended&lt;br /&gt;&#13;&amp;#160;June 30,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 50%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 11%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Geologic and field expenses&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$680&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;21&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$827&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;45&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Administrative&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;22&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;141&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;38&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;297&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total exploration costs&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$702&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$162&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$865&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$342&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</XPL:MineralPropertyExplorationExpenseTableTextBlock>
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2019-06-30_custom_LikProjectAlaskaUSMember" unitRef="USD" decimals="-3">15611000</XPL:MineralPropertyExplorationExpense>
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2018-12-31_custom_LikProjectAlaskaUSMember" unitRef="USD" decimals="-3">15611000</XPL:MineralPropertyExplorationExpense>
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2019-06-30_custom_LaPromesaPeruMember" unitRef="USD" decimals="-3">6000</XPL:MineralPropertyExplorationExpense>
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2018-12-31_custom_LaPromesaPeruMember" unitRef="USD" decimals="-3">6000</XPL:MineralPropertyExplorationExpense>
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2019-06-30_custom_MontanaRoyaltyPropertyUSMember" unitRef="USD" xsi:nil="true" />
    <XPL:MineralPropertyExplorationExpense contextRef="AsOf2018-12-31_custom_MontanaRoyaltyPropertyUSMember" unitRef="USD" decimals="-3">40000</XPL:MineralPropertyExplorationExpense>
    <us-gaap:CostOfOtherPropertyOperatingExpense contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">827000</us-gaap:CostOfOtherPropertyOperatingExpense>
    <us-gaap:CostOfOtherPropertyOperatingExpense contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">680000</us-gaap:CostOfOtherPropertyOperatingExpense>
    <us-gaap:CostOfOtherPropertyOperatingExpense contextRef="From2018-04-01to2018-06-30" unitRef="USD" decimals="-3">21000</us-gaap:CostOfOtherPropertyOperatingExpense>
    <us-gaap:CostOfOtherPropertyOperatingExpense contextRef="From2018-01-01to2018-06-30" unitRef="USD" decimals="-3">45000</us-gaap:CostOfOtherPropertyOperatingExpense>
    <us-gaap:OtherGeneralAndAdministrativeExpense contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">38000</us-gaap:OtherGeneralAndAdministrativeExpense>
    <us-gaap:OtherGeneralAndAdministrativeExpense contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">22000</us-gaap:OtherGeneralAndAdministrativeExpense>
    <us-gaap:OtherGeneralAndAdministrativeExpense contextRef="From2018-04-01to2018-06-30" unitRef="USD" decimals="-3">141000</us-gaap:OtherGeneralAndAdministrativeExpense>
    <us-gaap:OtherGeneralAndAdministrativeExpense contextRef="From2018-01-01to2018-06-30" unitRef="USD" decimals="-3">297000</us-gaap:OtherGeneralAndAdministrativeExpense>
    <us-gaap:MineReclamationAndClosingLiabilityNoncurrent contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">125000</us-gaap:MineReclamationAndClosingLiabilityNoncurrent>
    <us-gaap:MineReclamationAndClosingLiabilityNoncurrent contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">125000</us-gaap:MineReclamationAndClosingLiabilityNoncurrent>
    <us-gaap:MarketableSecuritiesTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;3. &amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Marketable&#13;Equity Securities&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario's investments in marketable&#13;equity securities are carried at fair value, which is based upon quoted prices of the securities owned. The cost of marketable&#13;equity securities sold is determined by the specific identification method. Changes in market value are recorded in the condensed&#13;consolidated statement of operations. During the three and six months ended June 30, 2019, Solitario recorded an unrealized loss&#13;on marketable equity securities of $63,000 and $389,000, respectively. During the three and six months ended June 30, 2018, Solitario&#13;recorded an unrealized loss on marketable equity securities of $222,000 and $663,000, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The following tables summarize Solitario&amp;#8217;s&#13;marketable equity securities and adjustments to fair value:&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 72%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;June 30,&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;2019&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;&amp;#160;December 31,&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;2018&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities at cost&lt;/td&gt;&#13;    &lt;td style="padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;$1,714&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;$1,714&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Cumulative unrealized loss on marketable equity securities&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;(518)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;&amp;#160;(129)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities at fair value&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;$1,585&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;The following table represents changes, including sales,&#13;in marketable equity securities during the three and six months ended June 30, 2019 and 2018:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Three months ended&lt;br /&gt;&#13;June 30,&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Six months ended&lt;br /&gt;&#13;June 30,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 60%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="width: 9%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&#13;    &lt;td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="width: 11%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Gross (loss) recorded in the statement of operations&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(63)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(222)&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(389)&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(663)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Change in marketable equity securities at fair value&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(63)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(222)&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(389)&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(663)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario did not sell any marketable&#13;equity securities during the three and six months ended June 30, 2019 or 2018 and the change in the fair value of marketable equity&#13;securities was related entirely to the unrealized loss on marketable equity securities related to their fair values based upon&#13;quoted market prices for the marketable equity securities held by Solitario during the periods.&lt;/p&gt;</us-gaap:MarketableSecuritiesTextBlock>
    <us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 72%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;June 30,&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;2019&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;&amp;#160;December 31,&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center"&gt;2018&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities at cost&lt;/td&gt;&#13;    &lt;td style="padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;$1,714&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;$1,714&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Cumulative unrealized loss on marketable equity securities&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;(518)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;&amp;#160;(129)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities at fair value&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right"&gt;$1,585&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock>
    <us-gaap:GainLossOnInvestmentsTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Three months ended&lt;br /&gt;&#13;June 30,&lt;/td&gt;&#13;    &lt;td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Six months ended&lt;br /&gt;&#13;June 30,&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 60%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="width: 9%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&#13;    &lt;td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="width: 11%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Gross (loss) recorded in the statement of operations&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(63)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(222)&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(389)&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(663)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Change in marketable equity securities at fair value&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(63)&lt;/td&gt;&#13;    &lt;td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(222)&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(389)&lt;/td&gt;&#13;    &lt;td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$(663)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:GainLossOnInvestmentsTextBlock>
    <us-gaap:AvailableForSaleSecurities contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">1714000</us-gaap:AvailableForSaleSecurities>
    <us-gaap:AvailableForSaleSecurities contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">1714000</us-gaap:AvailableForSaleSecurities>
    <us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">-518000</us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">-129000</us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax>
    <us-gaap:InvestmentsFairValueDisclosure contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">1196000</us-gaap:InvestmentsFairValueDisclosure>
    <us-gaap:InvestmentsFairValueDisclosure contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">1585000</us-gaap:InvestmentsFairValueDisclosure>
    <us-gaap:InvestmentsFairValueDisclosure contextRef="AsOf2019-06-30_us-gaap_FairValueInputsLevel1Member" unitRef="USD" decimals="-3">1196000</us-gaap:InvestmentsFairValueDisclosure>
    <us-gaap:InvestmentsFairValueDisclosure contextRef="AsOf2018-12-31_us-gaap_FairValueInputsLevel1Member" unitRef="USD" decimals="-3">1585000</us-gaap:InvestmentsFairValueDisclosure>
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    <us-gaap:InvestmentsFairValueDisclosure contextRef="AsOf2018-12-31_us-gaap_FairValueInputsLevel2Member" unitRef="USD" xsi:nil="true" />
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    <us-gaap:MarketableSecuritiesGainLoss contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">-389000</us-gaap:MarketableSecuritiesGainLoss>
    <us-gaap:MarketableSecuritiesGainLoss contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">-63000</us-gaap:MarketableSecuritiesGainLoss>
    <us-gaap:MarketableSecuritiesGainLoss contextRef="From2018-04-01to2018-06-30" unitRef="USD" decimals="-3">-222000</us-gaap:MarketableSecuritiesGainLoss>
    <us-gaap:MarketableSecuritiesGainLoss contextRef="From2018-01-01to2018-06-30" unitRef="USD" decimals="-3">-663000</us-gaap:MarketableSecuritiesGainLoss>
    <us-gaap:OperatingLeasesOfLesseeDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;4.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Operating&#13;Leases&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario adopted ASU 2016-02 effective&#13;January 1, 2019 and accounts for its leases in accordance with ASC 842. Solitario leases one facility, its Wheat Ridge, Colorado&#13;office (the &amp;#8220;WR Lease&amp;#8221;), that has a term of more than one year. Solitario has no other material operating lease costs.&#13;The WR Lease is classified as an operating lease and has a term of 20 months at June 30, 2019, with no renewal option. At June&#13;30, 2019, the right-of-use office lease asset for the WR Lease is classified as other assets and the related liability separated&#13;between current and non-current office lease liabilities in the condensed consolidated balance sheet. Lease expense is recognized&#13;on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred.&#13;During the three and six months ended June 30, 2019, Solitario recognized $10,000 and $20,000, respectively, of non-cash lease&#13;expense for the WR Lease included in general and administrative expense. Cash lease payments of $7,000 and $17,000, respectively,&#13;were made on the WR Lease during the three and six months ended June 30, 2019 and this amount, less $1,000 and $2,000, respectively,&#13;of imputed interest during the three and six months ended June 30, 2019, reduced the related liability on the WR Lease. The discount&#13;rate within the WR Lease is not determinable and Solitario has applied a discount rate of 5% based upon Solitario&amp;#8217;s estimate&#13;of its cost of capital.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;The maturities of Solitario&amp;#8217;s lease liability for&#13;its WR Lease are as follows at June 30, 2019:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 86%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Lease payments per year&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;20&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2020&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;42&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2021&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;7&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total lease payments&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;69&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Less amount of payments representing interest&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(2)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Present value of lease payments&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;67&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;The following is supplemental cash flow information related&#13;to our operating lease for the six months ended June 30, 2019:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 83%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 17%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Six months ended June 30, 2019&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Cash paid for amounts included in the measurement of lease liabilities&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Operating cash outflows from WR Lease payments&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$17&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Non-cash amounts related to the WR lease&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;Leased assets recorded in exchange for new operating lease liabilities&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$82&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;</us-gaap:OperatingLeasesOfLesseeDisclosureTextBlock>
    <us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 86%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Lease payments per year&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;20&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2020&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;42&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;&amp;#160;2021&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;7&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total lease payments&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;69&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Less amount of payments representing interest&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(2)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Present value of lease payments&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;67&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock>
    <us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">20000</us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear>
    <us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">42000</us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo>
    <us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">7000</us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree>
    <us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">69000</us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue>
    <us-gaap:CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">-2000</us-gaap:CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments>
    <us-gaap:CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">67000</us-gaap:CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments>
    <us-gaap:RepaymentsOfLongTermCapitalLeaseObligations contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">17000</us-gaap:RepaymentsOfLongTermCapitalLeaseObligations>
    <XPL:CapitalLeaseAssetsRecorded contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">82000</XPL:CapitalLeaseAssetsRecorded>
    <us-gaap:AmortizationOfLeasedAsset contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">20000</us-gaap:AmortizationOfLeasedAsset>
    <us-gaap:AmortizationOfLeasedAsset contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">10000</us-gaap:AmortizationOfLeasedAsset>
    <us-gaap:OperatingLeasePayments contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">17000</us-gaap:OperatingLeasePayments>
    <us-gaap:OperatingLeasePayments contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">7000</us-gaap:OperatingLeasePayments>
    <us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">2000</us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease>
    <us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">1000</us-gaap:InterestExpenseLesseeAssetsUnderCapitalLease>
    <us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="margin: 0pt"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;5&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Other&#13;Assets&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;The following items comprised other assets:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 72%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;June 30,&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;December 31&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Furniture and fixtures, net of accumulated depreciation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;33&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;36&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Lik project equipment, net of accumulated depreciation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;60&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;70&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Exploration bonds and other assets&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;4&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;4&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Office lease asset&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;64&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;-&amp;#160;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 30.6pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total other assets&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$161&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$110&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&#13;&#13;&lt;p style="margin: 0pt"&gt;&lt;/p&gt;</us-gaap:DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock>
    <us-gaap:ScheduleOfOtherAssetsTableTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 72%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;June 30,&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;December 31&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2019&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;2018&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Furniture and fixtures, net of accumulated depreciation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;33&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;$&amp;#160;&amp;#160;&amp;#160;36&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Lik project equipment, net of accumulated depreciation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;60&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;70&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Exploration bonds and other assets&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;4&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&amp;#160;4&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line"&gt;Office lease asset&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;64&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;-&amp;#160;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 30.6pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Total other assets&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$161&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;$110&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:ScheduleOfOtherAssetsTableTextBlock>
    <us-gaap:PropertyPlantAndEquipmentNet contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">33000</us-gaap:PropertyPlantAndEquipmentNet>
    <us-gaap:PropertyPlantAndEquipmentNet contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">36000</us-gaap:PropertyPlantAndEquipmentNet>
    <us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">60000</us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment>
    <us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">70000</us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment>
    <us-gaap:AccruedReclamationCostsCurrent contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">4000</us-gaap:AccruedReclamationCostsCurrent>
    <us-gaap:AccruedReclamationCostsCurrent contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">4000</us-gaap:AccruedReclamationCostsCurrent>
    <us-gaap:CapitalLeasedAssetsGross contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">64000</us-gaap:CapitalLeasedAssetsGross>
    <us-gaap:CapitalLeasedAssetsGross contextRef="AsOf2018-12-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:OtherAssets contextRef="AsOf2019-06-30" unitRef="USD" decimals="-3">161000</us-gaap:OtherAssets>
    <us-gaap:OtherAssets contextRef="AsOf2018-12-31" unitRef="USD" decimals="-3">110000</us-gaap:OtherAssets>
    <XPL:FairValuesDisclosuresTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;6.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Fair&#13;Value&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; background-color: white"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in; background-color: white"&gt;Solitario&#13;accounts for its financial instruments under ASC 820. For certain of Solitario&amp;#8217;s financial instruments, including cash and&#13;cash equivalents and payables, the carrying amounts approximate fair value due to their short-term maturities. Solitario&amp;#8217;s&#13;short-term investments in USTS, and marketable equity securities are carried at their estimated fair value primarily based on quoted&#13;market prices. During the three and six months ended June 30, 2019 there were no reclassifications in financial assets or liabilities&#13;between Level 1, 2 or 3 categories.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;The following is a listing of Solitario&amp;#8217;s&#13;financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within&#13;the hierarchy as of June 30, 2019:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;Level 1&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;Level 2&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;Level 3&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;Total&amp;#160;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&lt;b&gt;Assets&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Short-term investments&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$8,714&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right; text-indent: -0.25in"&gt;$&lt;font style="font: 7pt Times New Roman, Times, Serif"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160; &lt;/font&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$8,714&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&#13;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities &lt;/td&gt;&#13;    &lt;td style="width: 13%; padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 13%; padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-indent: 0.5in"&gt;The following is a listing of Solitario&amp;#8217;s&#13;financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within&#13;the hierarchy as of December 31, 2018:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: center"&gt;Level 1&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: center"&gt;Level 2&lt;/td&gt;&#13;    &lt;td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: center"&gt;Level 3&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&lt;b&gt;Assets&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Short-term investments&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$10,223&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$10,223&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;1,585&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;1,585&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;</XPL:FairValuesDisclosuresTextBlock>
    <us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;Level 1&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;Level 2&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;Level 3&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;Total&amp;#160;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&lt;b&gt;Assets&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Short-term investments&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$8,714&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right; text-indent: -0.25in"&gt;$&lt;font style="font: 7pt Times New Roman, Times, Serif"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160; &lt;/font&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$8,714&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities &lt;/td&gt;&#13;    &lt;td style="width: 13%; padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 13%; padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$1,196&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0"&gt;&amp;#160;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="width: 48%; layout-grid-mode: line; text-align: justify"&gt;(in thousands)&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: center"&gt;Level 1&lt;/td&gt;&#13;    &lt;td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: center"&gt;Level 2&lt;/td&gt;&#13;    &lt;td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: center"&gt;Level 3&lt;/td&gt;&#13;    &lt;td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&lt;b&gt;Assets&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Short-term investments&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$10,223&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$10,223&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="layout-grid-mode: line"&gt;&amp;#160;&amp;#160;Marketable equity securities&lt;/td&gt;&#13;    &lt;td style="padding-right: 6pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;1,585&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right"&gt;$&amp;#160;&amp;#160;1,585&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="AsOf2019-06-30_us-gaap_FairValueInputsLevel1Member" unitRef="USD" decimals="-3">8714000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="AsOf2018-12-31_us-gaap_FairValueInputsLevel1Member" unitRef="USD" decimals="-3">10223000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="AsOf2019-06-30_us-gaap_FairValueInputsLevel2Member" unitRef="USD" xsi:nil="true" />
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    <us-gaap:IncomeTaxDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;7.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Income&#13;Taxes&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario accounts for income taxes&#13;in accordance with ASC 740. Under ASC 740, income taxes are provided for the tax effects of transactions reported in the financial&#13;statements and consist of taxes currently due plus deferred taxes related to certain income and expenses recognized in different&#13;periods for financial and income tax reporting purposes. Deferred tax assets and liabilities represent the future tax return consequences&#13;of those differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred&#13;taxes are also recognized for operating losses and tax credits that are available to offset future taxable income and income taxes,&#13;respectively. A valuation allowance is provided if it is more likely than not that some portion or all of the deferred tax assets&#13;will not be realized.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;At June 30, 2019 and December 31,&#13;2018, a valuation allowance has been recorded, which fully offsets Solitario&amp;#8217;s net deferred tax assets, because it is more&#13;likely than not that the Company will not realize some portion or all of its deferred tax assets.&amp;#160; The Company continually&#13;assesses both positive and negative evidence to determine whether it is more likely than not that the deferred tax assets can be&#13;realized prior to their expiration.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;During the three and six months ended&#13;June 30, 2019 and 2018, Solitario recorded no current or deferred tax expense.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;</us-gaap:IncomeTaxDisclosureTextBlock>
    <us-gaap:CommitmentsAndContingenciesDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;8.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Commitments&#13;and contingencies&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;Solitario has recorded an asset retirement&#13;obligation of $125,000 related to its Lik project in Alaska. See Note 2, &amp;#8220;Mineral Property,&amp;#8221; above.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;In August of 2018, Solitario agreed&#13;to fund a portion of a 2018 &amp;#8211; 2019 drilling program at the Florida Canyon project. Pursuant to the agreement, Solitario will&#13;fund up to $1,580,000 of a planned 41-hole 17,000-meter drilling program to be conducted through December 31, 2019 (the &amp;#8220;Drilling&#13;Program&amp;#8221;). Upon Nexa completing the first 1,700 meters of the Drilling Program, Solitario will pay Nexa $527,000, upon completion&#13;of the next 1,700 meters (3,400 meters total) of the Drilling Program, Solitario will pay Nexa $527,000, and upon completion of&#13;the next 1,700 meters (5,100 meters total) of the Drilling Program, Solitario will pay Nexa the balance remaining on its $1,580,000&#13;funding commitment, or $526,000. Solitario has no obligation to pay Nexa prior to the attainment of the separate 1,700-meter thresholds.&#13;The funding commitments are in the form of an advance on Solitario&amp;#8217;s commitment to fund 30% of any future development of&#13;Florida Canyon under the existing joint venture agreement with Nexa. Accordingly, in the event Florida Canyon is developed, which&#13;cannot be assured at this time, any funds paid to Nexa under this agreement, will reduce the amount of Solitario&amp;#8217;s obligation&#13;to fund 30% of future development costs, and / or repay loans from Nexa for future development costs at the Florida Canyon project.&#13;During 2018, Nexa completed a total of 2,203 meters under the Drilling Program and Solitario recorded a charge to exploration expense&#13;of $527,000, which Solitario paid during 2019. During the six months ended June 30, 2019, Nexa completed additional drilling to&#13;meet the second required meter threshold of 1,700 meters (or a total of 3,400 meters). Solitario recorded a charge to exploration&#13;expense of $527,000 during the three and six months ended June 30, 2019 and Solitario has recorded an account payable as of June&#13;30, 2019 to Nexa of $527,000, which was paid in July 2019 for the completion of this second phase of the drilling during the six&#13;months ended June 30, 2019. Should Nexa complete the remaining 1,700 meters (5,100 meters less the completed 3,400 meters) during&#13;the remainder of 2019, Solitario will be obligated to pay Nexa the final tranche under the agreement of $526,000 during the remainder&#13;of 2019.&lt;/p&gt;</us-gaap:CommitmentsAndContingenciesDisclosureTextBlock>
    <us-gaap:IncreaseDecreaseInOperatingLiabilities contextRef="From2018-07-01to2018-09-30" unitRef="USD" decimals="-3">1580000</us-gaap:IncreaseDecreaseInOperatingLiabilities>
    <us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="margin: 0pt"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;9.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Employee&#13;Stock Compensation Plans&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On June 18, 2013, Solitario&amp;#8217;s&#13;shareholders approved the 2013 Solitario Exploration &amp;#38; Royalty Corp. Omnibus Stock and Incentive Plan (the &amp;#8220;2013 Plan&amp;#8221;).&#13;Under the terms of the 2013 Plan, a total of 1,750,000 shares of Solitario common stock were reserved for awards to directors,&#13;officers, employees and consultants. On June 29, 2017, Solitario shareholders approved an amendment to the 2013 Plan, which increased&#13;the number of shares of common stock available for issuance under the 2013 Plan from 1,750,000 to 5,750,000. Awards granted under&#13;the 2013 Plan may take the form of stock options, stock appreciation rights, restricted stock, and restricted stock units. The&#13;terms and conditions of the awards are pursuant to the 2013 Plan and are granted by the Board of Directors or a committee appointed&#13;by the Board of Directors.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;As of June 30, 2019, and December&#13;31, 2018 there were options outstanding that are exercisable to acquire 4,373,000 and 5,223,160 shares, respectively, of Solitario&#13;common stock, with option prices between $0.28 and $0.77 per share. During the three months ended June 30, 2019 and 2018 Solitario&#13;did not grant any additional options. During the six months ended June 30, 2019, Solitario granted options exercisable to acquire&#13;150,000 shares of common stock, with an exercise price of $0.28 per share, a five-year term, and a grant date fair value of $23,000&#13;based upon a Black-Scholes model, with a 64% volatility and a 2.4% risk-free interest rate. In addition, during the six months&#13;ended June 30, 2019, options exercisable to acquire 1,000,160 shares of common stock, with exercise prices between $1.68 and $0.70&#13;per share, expired unexercised. During the six months ended June 30, 2018, Solitario granted options exercisable to acquire 100,000&#13;shares of common stock to a consultant, with an exercise price of $0.62 per share, a seven-month term and a grant date fair value&#13;of $12,000 based upon a Black-Scholes model with a 66% volatility and a 1% risk-free interest rate. There were no exercises of&#13;options under the 2013 Plan during the three and six months ended June 30, 2019 and 2018. During the three and six months ended&#13;June 30, 2019, Solitario recorded stock option compensation expense of $85,000 and $173,000, respectively. During the three and&#13;six months ended June 30, 2018, Solitario recorded non-cash stock option compensation expense of $432,000 and $442,000, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On September 1, 2017, the Board of&#13;Directors granted, subject to shareholder approval at the next meeting of shareholders, 2,300,000 stock options under the 2013&#13;Plan to officers and members of the Board of Directors (the &amp;#8220;Conditional Options&amp;#8221;). The Conditional Options were approved&#13;at Solitario&amp;#8217;s annual meeting on June 19, 2018. The Conditional Options have a five-year life, an exercise price of $0.77&#13;per share, and a grant date fair value of $970,000, based upon a Black-Scholes model with a volatility of 64%, and a risk-free&#13;interest rate of 1.70%. The Conditional Options vest on the schedule of 25% on date of approval of the grant (June 19, 2018) and&#13;25% on each of the next three anniversary dates of the date of grant (September 1, 2018, 2019 and 2020).&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;At June 30, 2019, the total unrecognized&#13;stock option compensation cost related to non-vested options is $487,000 and is expected to be recognized over a weighted average&#13;period of 19 months.&lt;/p&gt;&#13;&#13;&#13;&#13;&lt;p style="margin: 0pt"&gt;&lt;/p&gt;</us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized contextRef="AsOf2013-06-08" unitRef="Shares" decimals="INF">5750000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2019-06-30" unitRef="Shares" decimals="INF">4373000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2018-12-31" unitRef="Shares" decimals="INF">5223160</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross contextRef="From2019-01-01to2019-06-30" unitRef="Shares" decimals="INF">150000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross contextRef="From2018-01-01to2018-06-30" unitRef="Shares" decimals="INF">100000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue contextRef="From2019-01-01to2019-06-30" unitRef="USDPShares" decimals="INF">23</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue>
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    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod contextRef="From2019-01-01to2019-06-30" unitRef="Shares" decimals="INF">1000160</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2019-01-01to2019-06-30" unitRef="USD" decimals="-3">173000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2019-04-01to2019-06-30" unitRef="USD" decimals="-3">85000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2018-04-01to2018-06-30" unitRef="USD" decimals="-3">432000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2018-01-01to2018-06-30" unitRef="USD" decimals="-3">442000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber contextRef="AsOf2017-09-01" unitRef="Shares" decimals="INF">2300000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber>
    <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="From2019-01-01to2019-06-30">&lt;p style="margin: 0pt"&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;b&gt;10.&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Shareholders&amp;#8217;&#13;Equity&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&lt;u&gt;Shareholders&amp;#8217; Equity for the six months ended&#13;June 30, 2018:&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 32%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;(in thousands, except&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 10%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 9%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 11%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 12%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Accumulated&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 12%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Share amounts)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Additional&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Other&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Paid-in&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Accumulated&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Comprehensive&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shareholders&amp;#8217;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shares&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Amount&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Capital&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Deficit&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Income&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Equity&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at December 31, 2017&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,434,566&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;584&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,312&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(40,343)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$&amp;#160;&amp;#160;&amp;#160;576&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$30,129&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;Cumulative-effect adjustment&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;change in accounting principle&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;576&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(576)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;-&amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Adjusted balance January 1, 2018&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,434,566&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;584&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;69,312&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;(39,767)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 26.2pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;30,129&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Stock option expense&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;442&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;442&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Purchase of shares for cancellation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(145,200)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(64)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(65)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Net loss&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,617)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,617)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at June 30, 2018 &lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,289,366&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$583&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,690&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(41,384)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$28,889&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;Solitario adopted Accounting Standards Update No. 2016-01&#13;&lt;i&gt;Recognition and Measurement of Financial Assets and Financial Liabilities &lt;/i&gt;(&amp;#8220;ASU 2016-01&amp;#8221;) in the first quarter&#13;of 2018. ASU No. 2016-01 revised the classification and measurement of investment in certain equity investments and the presentation&#13;of certain fair value changes for certain financial liabilities measured at fair value. ASU No. 2016-01 requires the change in&#13;fair value of many equity investments to be recognized in net income. Solitario recorded a cumulative-effect adjustment for the&#13;change in accounting principle to retained earnings of $576,000 related to the adoption of ASU 2016-01.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&lt;u&gt;Shareholders&amp;#8217; Equity for the six months ended&#13;June 30, 2019:&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 36%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;(in thousands, except&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 10%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Share amounts)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Additional&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Paid-in&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Accumulated&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shareholders&amp;#8217;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shares&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Amount&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Capital&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Deficit&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Equity&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at December 31, 2018&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,171,466&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;582&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,873&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(43,365)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$27,090&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Stock option expense&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;173&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;173&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Purchase of shares for cancellation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(33,200)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(10)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(11)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Net loss&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,443)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,443)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at June 30, 2019 &lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,138,266&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$581&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$70,036&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(44,808)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$25,809&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&lt;u&gt;Share Repurchase Program&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"&gt;On October 28, 2015, Solitario&amp;#8217;s&#13;Board of Directors approved a share repurchase program that authorized Solitario to purchase up to two million shares of its outstanding&#13;common stock. During 2018, Solitario&amp;#8217;s Board of Directors extended the expiration date of the share repurchase program through&#13;December 31, 2019. During the three months ended June 30, 2019 and 2018, Solitario purchased 5,300 and 92,566 shares of Solitario&#13;common stock, respectively, for an aggregate purchase price of $2,000 and $39,000, respectively. During the six months ended June&#13;30, 2019 and 2018, Solitario purchased 33,200 and 145,200 shares of Solitario common stock, respectively, for an aggregate purchase&#13;price of $11,000 and $65,000, respectively. As of June 30, 2019, Solitario has purchased a total of 964,100 shares for an aggregate&#13;purchase price of $460,000 under the share repurchase program since its inception.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&#13;&#13;&lt;p style="margin: 0pt"&gt;&lt;/p&gt;</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
    <us-gaap:ShareholdersEquityAndShareBasedPaymentsTextBlock contextRef="From2019-01-01to2019-06-30">&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 32%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;(in thousands, except&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 10%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 9%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 11%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 12%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Accumulated&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 12%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Share amounts)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Additional&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Other&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Paid-in&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Accumulated&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Comprehensive&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shareholders&amp;#8217;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shares&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Amount&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Capital&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Deficit&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Income&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Equity&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at December 31, 2017&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,434,566&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;584&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,312&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(40,343)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$&amp;#160;&amp;#160;&amp;#160;576&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$30,129&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;Cumulative-effect adjustment&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;change in accounting principle&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;576&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(576)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;-&amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Adjusted balance January 1, 2018&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,434,566&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;584&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;69,312&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;(39,767)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 26.2pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;30,129&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Stock option expense&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;442&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;442&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Purchase of shares for cancellation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(145,200)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(64)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(65)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Net loss&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,617)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,617)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at June 30, 2018 &lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,289,366&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$583&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,690&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(41,384)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$&amp;#160;&amp;#160;&amp;#160;&amp;#160;-&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$28,889&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"&gt;&amp;#160;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"&gt;&lt;u&gt;Shareholders&amp;#8217; Equity for the six months ended&#13;June 30, 2019:&lt;/u&gt;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; width: 36%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;(in thousands, except&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 10%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 13%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Share amounts)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Common&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Additional&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Total&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Stock&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Paid-in&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"&gt;&lt;font style="font-family: Times New Roman, Times, Serif"&gt;Accumulated&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shareholders&amp;#8217;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Shares&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Amount&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt"&gt;Capital&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Deficit&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center"&gt;Equity&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at December 31, 2018&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,171,466&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;582&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$69,873&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$(43,365)&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$27,090&amp;#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Stock option expense&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;173&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;- &amp;#160;&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;173&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Purchase of shares for cancellation&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(33,200)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(10)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(11)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;Net loss&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;-&amp;#160;&amp;#160;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,443)&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;(1,443)&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr&gt;&#13;    &lt;td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"&gt;&lt;b&gt;Balance at June 30, 2019 &lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;58,138,266&amp;#160;&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"&gt;&lt;b&gt;$581&lt;/b&gt;&lt;/td&gt;&#13;    &lt;td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; 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      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US">Document Period End Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US">Amendment Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentDescription" xlink:label="dei_AmendmentDescription" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentDescription" xlink:to="dei_AmendmentDescription_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentDescription_lbl" xml:lang="en-US">Amendment Description</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US">Current Fiscal Year End Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="dei_EntityWellKnownSeasonedIssuer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xml:lang="en-US">Is Entity a Well-known Seasoned Issuer?</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="dei_EntityVoluntaryFilers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityVoluntaryFilers_lbl" xml:lang="en-US">Is Entity a Voluntary Filer?</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US">Is Entity's Reporting Status Current?</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US">Is Entity Emerging Growth Company?</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityExTransitionPeriod" xlink:label="dei_EntityExTransitionPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityExTransitionPeriod" xlink:to="dei_EntityExTransitionPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityExTransitionPeriod_lbl" xml:lang="en-US">Elected Not To Use the Extended Transition Period</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US">Entity Filer Category</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US">Entity Small Business</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityPublicFloat" xlink:label="dei_EntityPublicFloat" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPublicFloat" xlink:to="dei_EntityPublicFloat_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityPublicFloat_lbl" xml:lang="en-US">Entity Public Float</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US">Document Fiscal Period Focus</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US">Document Fiscal Year Focus</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US">Assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="us-gaap_AssetsCurrentAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US">Current assets:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US">Cash and cash equivalents</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TimeDepositsAtCarryingValue" xlink:label="us-gaap_TimeDepositsAtCarryingValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TimeDepositsAtCarryingValue" xlink:to="us-gaap_TimeDepositsAtCarryingValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TimeDepositsAtCarryingValue_lbl" xml:lang="en-US">Short-term investments</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesCurrent" xlink:label="us-gaap_AvailableForSaleSecuritiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesCurrent" xlink:to="us-gaap_AvailableForSaleSecuritiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AvailableForSaleSecuritiesCurrent_lbl" xml:lang="en-US">Investments in marketable equity securities, at fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xml:lang="en-US">Prepaid expenses and other</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US">Total current assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MineralPropertiesNet" xlink:label="us-gaap_MineralPropertiesNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MineralPropertiesNet" xlink:to="us-gaap_MineralPropertiesNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MineralPropertiesNet_lbl" xml:lang="en-US">Mineral properties</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US">Other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssets" xlink:to="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xml:lang="en-US">Total assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US">Liabilities and Shareholders&#8217; Equity</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US">Current liabilities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US">Accounts payable</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xml:lang="en-US">Operating lease liability</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US">Total current liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_lbl" xml:lang="en-US">Long-term liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="us-gaap_AssetRetirementObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetRetirementObligation" xlink:to="us-gaap_AssetRetirementObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetRetirementObligation_lbl" xml:lang="en-US">Asset retirement obligation &#8211; Lik</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xml:lang="en-US">Operating lease liability</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:label="us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:to="us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_lbl" xml:lang="en-US">Total long-term liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US">Shareholders&#8217; equity:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at June 30, 2019 and December 31, 2018)</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common stock, $0.01 par value, authorized 100,000,000 shares (58,138,266 and 58,171,466 shares, respectively, issued and outstanding at June 30, 2019 and December 31, 2018)</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional paid-in capital</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US">Accumulated deficit</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Total shareholders&#8217; equity</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">Total liabilities and shareholders&#8217; equity</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:to="us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_lbl" xml:lang="en-US">Preferred stock</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred stock, par value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US">Preferred stock, shares authorized</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred stock, shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:to="us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_lbl" xml:lang="en-US">Common stock</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Common stock, par value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US">Common stock, shares authorized</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Common stock, shares issued</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common stock, shares outstanding</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US">Income Statement [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSaleOfProperties" xlink:label="us-gaap_GainLossOnSaleOfProperties" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfProperties" xlink:to="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xml:lang="en-US">Revenue, net &#8211; mineral property sale</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:label="us-gaap_CostsAndExpensesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xml:lang="en-US">Costs, expenses and other:</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_ExplorationExpenseMineralProperties" xlink:label="XPL_ExplorationExpenseMineralProperties" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_ExplorationExpenseMineralProperties" xlink:to="XPL_ExplorationExpenseMineralProperties_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_ExplorationExpenseMineralProperties_lbl" xml:lang="en-US">Exploration expense</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="us-gaap_DepreciationAndAmortization" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationAndAmortization" xlink:to="us-gaap_DepreciationAndAmortization_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and administrative</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="us-gaap_OtherCostAndExpenseOperating" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCostAndExpenseOperating" xlink:to="us-gaap_OtherCostAndExpenseOperating_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherCostAndExpenseOperating_lbl" xml:lang="en-US">Total costs, expenses and other</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIncomeDisclosureNonoperating" xlink:label="us-gaap_OtherIncomeDisclosureNonoperating" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncomeDisclosureNonoperating" xlink:to="us-gaap_OtherIncomeDisclosureNonoperating_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncomeDisclosureNonoperating_lbl" xml:lang="en-US">Other (loss) income</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetInvestmentIncome" xlink:label="us-gaap_NetInvestmentIncome" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetInvestmentIncome" xlink:to="us-gaap_NetInvestmentIncome_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetInvestmentIncome_lbl" xml:lang="en-US">Interest income (net)</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments" xlink:label="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments" xlink:to="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_lbl" xml:lang="en-US">Unrealized (loss) on marketable equity securities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonrecurringIncomeExpense" xlink:label="us-gaap_OtherNonrecurringIncomeExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonrecurringIncomeExpense" xlink:to="us-gaap_OtherNonrecurringIncomeExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="us-gaap_OtherNonrecurringIncomeExpense_lbl" xml:lang="en-US">Total other income (loss)</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net loss</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_IncomeLossPerShareAttributableToSolitarioShareholders" xlink:label="XPL_IncomeLossPerShareAttributableToSolitarioShareholders" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_IncomeLossPerShareAttributableToSolitarioShareholders" xlink:to="XPL_IncomeLossPerShareAttributableToSolitarioShareholders_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_IncomeLossPerShareAttributableToSolitarioShareholders_lbl" xml:lang="en-US">Loss per common share:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAndDiluted" xlink:to="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted_lbl" xml:lang="en-US">Basic and diluted</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US">Weighted average shares outstanding:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:to="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl" xml:lang="en-US">Basic and diluted</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Operating activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments to reconcile net loss to net cash used in operating activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="us-gaap_LeaseAndRentalExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xml:lang="en-US">Non-cash office lease expense</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments" xlink:to="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments_2_lbl" xml:lang="en-US">Unrealized loss on marketable equity securities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="us-gaap_StockOptionPlanExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockOptionPlanExpense" xlink:to="us-gaap_StockOptionPlanExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockOptionPlanExpense_lbl" xml:lang="en-US">Employee stock option expense</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Prepaid expenses and other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable_lbl" xml:lang="en-US">Note receivable, net of mineral property sold</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US">Accounts payable and other current liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US">Net cash used in operating activities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US">Investing activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:label="us-gaap_ProceedsFromSaleOfShortTermInvestments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:to="us-gaap_ProceedsFromSaleOfShortTermInvestments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfShortTermInvestments_lbl" xml:lang="en-US">Sale of short-term investments, net</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForPurchaseOfOtherAssets1" xlink:label="us-gaap_PaymentsForPurchaseOfOtherAssets1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForPurchaseOfOtherAssets1" xlink:to="us-gaap_PaymentsForPurchaseOfOtherAssets1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForPurchaseOfOtherAssets1_lbl" xml:lang="en-US">Purchase of other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net cash provided by investing activities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">Financing activities:</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Purchase of common stock for cancellation</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US">Net cash used in financing activities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US">Net increase (decrease) in cash and cash equivalents</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_2_lbl" xml:lang="en-US">Cash and cash equivalents, beginning of period</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_3_lbl" xml:lang="en-US">Cash and cash equivalents, end of period</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US">Accounting Policies [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:to="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Business and Significant Accounting Policies</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ExtractiveIndustriesAbstract" xlink:label="srt_ExtractiveIndustriesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ExtractiveIndustriesAbstract" xlink:to="srt_ExtractiveIndustriesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_ExtractiveIndustriesAbstract_lbl" xml:lang="en-US">Extractive Industries [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MineralIndustriesDisclosuresTextBlock" xlink:label="us-gaap_MineralIndustriesDisclosuresTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MineralIndustriesDisclosuresTextBlock" xlink:to="us-gaap_MineralIndustriesDisclosuresTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MineralIndustriesDisclosuresTextBlock_lbl" xml:lang="en-US">Mineral Property</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:to="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xml:lang="en-US">Investments, Debt and Equity Securities [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MarketableSecuritiesTextBlock" xlink:label="us-gaap_MarketableSecuritiesTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesTextBlock" xlink:to="us-gaap_MarketableSecuritiesTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesTextBlock_lbl" xml:lang="en-US">Marketable Equity Securities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="us-gaap_LeasesAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesAbstract" xlink:to="us-gaap_LeasesAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeasesAbstract_lbl" xml:lang="en-US">Leases [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock" xlink:label="us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock" xlink:to="us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_lbl" xml:lang="en-US">Operating Leases</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:to="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_lbl" xml:lang="en-US">Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xlink:to="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock_lbl" xlink:type="arc" />
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      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" />
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      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" />
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      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xml:lang="en-US">Operating lease asset Wheat Ridge office</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US">Statement [Table]</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US">Statement [Line Items]</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_MineralPropertyExplorationExpense" xlink:label="XPL_MineralPropertyExplorationExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_MineralPropertyExplorationExpense" xlink:to="XPL_MineralPropertyExplorationExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_MineralPropertyExplorationExpense_lbl" xml:lang="en-US">Exploration</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfOtherPropertyOperatingExpense" xlink:label="us-gaap_CostOfOtherPropertyOperatingExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfOtherPropertyOperatingExpense" xlink:to="us-gaap_CostOfOtherPropertyOperatingExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostOfOtherPropertyOperatingExpense_lbl" xml:lang="en-US">Geologic and field expenses</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherGeneralAndAdministrativeExpense" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherGeneralAndAdministrativeExpense" xlink:to="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xml:lang="en-US">Administrative</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_ExplorationExpenseMineralProperties" xlink:to="XPL_ExplorationExpenseMineralProperties_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="XPL_ExplorationExpenseMineralProperties_2_lbl" xml:lang="en-US">Total exploration costs</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MineReclamationAndClosingLiabilityNoncurrent" xlink:label="us-gaap_MineReclamationAndClosingLiabilityNoncurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MineReclamationAndClosingLiabilityNoncurrent" xlink:to="us-gaap_MineReclamationAndClosingLiabilityNoncurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MineReclamationAndClosingLiabilityNoncurrent_lbl" xml:lang="en-US">Lik asset retirement obligation</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="us-gaap_AvailableForSaleSecurities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecurities" xlink:to="us-gaap_AvailableForSaleSecurities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AvailableForSaleSecurities_lbl" xml:lang="en-US">Marketable equity securities at cost</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax" xlink:label="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax" xlink:to="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax_lbl" xml:lang="en-US">Cumulative unrealized loss on marketable equity securities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="us-gaap_InvestmentsFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsFairValueDisclosure" xlink:to="us-gaap_InvestmentsFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentsFairValueDisclosure_lbl" xml:lang="en-US">Marketable equity securities at fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MarketableSecuritiesGainLoss" xlink:label="us-gaap_MarketableSecuritiesGainLoss" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesGainLoss" xlink:to="us-gaap_MarketableSecuritiesGainLoss_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesGainLoss_lbl" xml:lang="en-US">Gross (loss) recorded in the statement of operations</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesGainLoss" xlink:to="us-gaap_MarketableSecuritiesGainLoss_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MarketableSecuritiesGainLoss_2_lbl" xml:lang="en-US">Change in marketable equity securities at fair value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_lbl" xml:lang="en-US">2019</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US">2020</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US">2021</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xml:lang="en-US">Total lease payments</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_lbl" xml:lang="en-US">Less amount of payments representing interest</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_lbl" xml:lang="en-US">Present value of lease payments</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:to="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_lbl" xml:lang="en-US">Operating cash outflows from WR Lease payments</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_CapitalLeaseAssetsRecorded" xlink:label="XPL_CapitalLeaseAssetsRecorded" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_CapitalLeaseAssetsRecorded" xlink:to="XPL_CapitalLeaseAssetsRecorded_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_CapitalLeaseAssetsRecorded_lbl" xml:lang="en-US">Leased assets recorded in exchange for new operating lease liabilities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfLeasedAsset" xlink:label="us-gaap_AmortizationOfLeasedAsset" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfLeasedAsset" xlink:to="us-gaap_AmortizationOfLeasedAsset_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfLeasedAsset_lbl" xml:lang="en-US">Non-cash lease expense recognized</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="us-gaap_OperatingLeasePayments" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasePayments_lbl" xml:lang="en-US">Cash lease payments</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease" xlink:label="us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease" xlink:to="us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease_lbl" xml:lang="en-US">Imputed interest</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Furniture and fixtures, net of accumulated depreciation</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_lbl" xml:lang="en-US">Lik project equipment, net of accumulated depreciation</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedReclamationCostsCurrent" xlink:label="us-gaap_AccruedReclamationCostsCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedReclamationCostsCurrent" xlink:to="us-gaap_AccruedReclamationCostsCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedReclamationCostsCurrent_lbl" xml:lang="en-US">Exploration bonds and other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalLeasedAssetsGross" xlink:label="us-gaap_CapitalLeasedAssetsGross" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeasedAssetsGross" xlink:to="us-gaap_CapitalLeasedAssetsGross_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeasedAssetsGross_lbl" xml:lang="en-US">Office lease asset</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US">Total other assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xml:lang="en-US">Assets</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:to="us-gaap_CashAndCashEquivalentsFairValueDisclosure_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure_lbl" xml:lang="en-US">Short-term investments</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsFairValueDisclosure" xlink:to="us-gaap_InvestmentsFairValueDisclosure_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InvestmentsFairValueDisclosure_2_lbl" xml:lang="en-US">Marketable equity securities</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilities" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOperatingLiabilities_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilities_lbl" xml:lang="en-US">Agreement to fund drilling program at Florida Canyon payable in three installments of $527,000, $527,000, and $526,000</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US">Total shares available for awards in 2013 Plan, as amended</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xml:lang="en-US">Outstanding options exercisable with option prices between $0.28 and $0.77 per share</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US">Options granted at $0.28 per shareand $0.62 per share</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US">Grant date fair value options granted</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xml:lang="en-US">Options expired with exercise prices between $1.68 and $0.70 per share</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US">Stock option compensation expense recorded</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xml:lang="en-US">Conditional options granted with exercise price of $0.77 per share, with grant date fair value of $970,000</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl" xml:lang="en-US">Unrecognized stock option compensation cost related to non-vested options</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Beginning balance, value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued" xlink:label="us-gaap_SharesIssued" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesIssued_lbl" xml:lang="en-US">Beginning balance, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_lbl" xml:lang="en-US">Stock option expense</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xml:lang="en-US">Purchase of shares for cancellation, value</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xml:lang="en-US">Purchase of shares for cancellation, shares</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquity_2_lbl" xml:lang="en-US">Ending balance, value</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesIssued_2_lbl" xml:lang="en-US">Ending balance, shares</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:to="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_lbl" xml:lang="en-US">Cumulative-effect adjustment for the change in accounting principle to retained earnings mar 31 18</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:to="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xml:lang="en-US">Shares of outstanding common stock authorized for repurchase</link:label>
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US">Shares repurchased</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_StockRepurchasedAndRetiredDuringPeriodValue2" xlink:label="XPL_StockRepurchasedAndRetiredDuringPeriodValue2" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_StockRepurchasedAndRetiredDuringPeriodValue2" xlink:to="XPL_StockRepurchasedAndRetiredDuringPeriodValue2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_StockRepurchasedAndRetiredDuringPeriodValue2_lbl" xml:lang="en-US">Aggregate purchase price</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_StockRepurchaseTotalSharesRepurchased" xlink:label="XPL_StockRepurchaseTotalSharesRepurchased" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_StockRepurchaseTotalSharesRepurchased" xlink:to="XPL_StockRepurchaseTotalSharesRepurchased_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_StockRepurchaseTotalSharesRepurchased_lbl" xml:lang="en-US">Total of shares repurchased</link:label>
      <link:loc xlink:type="locator" xlink:href="xpl-20190630.xsd#XPL_TotalAggregatePriceStockRepurchased" xlink:label="XPL_TotalAggregatePriceStockRepurchased" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_TotalAggregatePriceStockRepurchased" xlink:to="XPL_TotalAggregatePriceStockRepurchased_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="XPL_TotalAggregatePriceStockRepurchased_lbl" xml:lang="en-US">Aggregate total repurchase price</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_ExplorationExpenseMineralProperties" xlink:to="XPL_ExplorationExpenseMineralProperties_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_ExplorationExpenseMineralProperties_doc" xml:lang="en-US">Exploration expense mineral properties.</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_IncomeLossPerShareAttributableToSolitarioShareholders" xlink:to="XPL_IncomeLossPerShareAttributableToSolitarioShareholders_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_IncomeLossPerShareAttributableToSolitarioShareholders_doc" xml:lang="en-US">Income loss per share attributable to shareholders</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_CapitalLeaseAssetsRecorded" xlink:to="XPL_CapitalLeaseAssetsRecorded_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_CapitalLeaseAssetsRecorded_doc" xml:lang="en-US">Capital lease assets recorded</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_StockRepurchaseTotalSharesRepurchased" xlink:to="XPL_StockRepurchaseTotalSharesRepurchased_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_StockRepurchaseTotalSharesRepurchased_doc" xml:lang="en-US">Total aggregate shares repurchased stock</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_TotalAggregatePriceStockRepurchased" xlink:to="XPL_TotalAggregatePriceStockRepurchased_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_TotalAggregatePriceStockRepurchased_doc" xml:lang="en-US">Total aggregate price repurchased stock</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_StockRepurchasedAndRetiredDuringPeriodValue2" xlink:to="XPL_StockRepurchasedAndRetiredDuringPeriodValue2_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_StockRepurchasedAndRetiredDuringPeriodValue2_doc" xml:lang="en-US">Stock repurchased and retired during period</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="XPL_CarryingValueAssetsSold" xlink:to="XPL_CarryingValueAssetsSold_doc" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="XPL_CarryingValueAssetsSold_doc" xml:lang="en-US">Value of assets sold in royalty sale</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_2_lbl" xml:lang="en-US">Assets, Current</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssets" xlink:to="us-gaap_PrepaidExpenseAndOtherAssets_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_2_lbl" xml:lang="en-US">Prepaid Expense and Other Assets</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeaseLiability_2_lbl" xml:lang="en-US">Operating Lease, Liability</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_2_lbl" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_2_lbl" xml:lang="en-US">Liabilities and Equity</link:label>
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCostAndExpenseOperating" xlink:to="us-gaap_OtherCostAndExpenseOperating_2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherCostAndExpenseOperating_2_lbl" xml:lang="en-US">Other Cost and Expense, Operating</link:label>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6753072992">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Document and Entity Information - shares<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<th class="th"><div>Jun. 30, 2019</div></th>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentFiscalPeriodFocus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalPeriodFocus</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalYearFocus</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCommonStockSharesOutstanding</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCurrentReportingStatus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCurrentReportingStatus</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFilerCategory">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated), (5) Smaller Reporting Accelerated Filer or (6) Smaller Reporting Company and Large Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFilerCategory</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
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</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntitySmallBusiness">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicates that the company is a smaller reporting company with both a public float and revenues of less than $75 million.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntitySmallBusiness</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6749628784">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Condensed Consolidated Balance Sheets - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrentAbstract', window );"><strong>Current assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 564<span></span>
</td>
<td class="nump">$ 117<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_TimeDepositsAtCarryingValue', window );">Short-term investments</a></td>
<td class="nump">8,714<span></span>
</td>
<td class="nump">10,223<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AvailableForSaleSecuritiesCurrent', window );">Investments in marketable equity securities, at fair value</a></td>
<td class="nump">1,196<span></span>
</td>
<td class="nump">1,585<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent', window );">Prepaid expenses and other</a></td>
<td class="nump">416<span></span>
</td>
<td class="nump">211<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsCurrent', window );">Total current assets</a></td>
<td class="nump">10,890<span></span>
</td>
<td class="nump">12,136<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MineralPropertiesNet', window );">Mineral properties</a></td>
<td class="nump">15,617<span></span>
</td>
<td class="nump">15,657<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssetsNoncurrent', window );">Other assets</a></td>
<td class="nump">161<span></span>
</td>
<td class="nump">110<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PrepaidExpenseAndOtherAssets', window );">Total assets</a></td>
<td class="nump">26,668<span></span>
</td>
<td class="nump">27,903<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrentAbstract', window );"><strong>Current liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts payable</a></td>
<td class="nump">667<span></span>
</td>
<td class="nump">688<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityCurrent', window );">Operating lease liability</a></td>
<td class="nump">39<span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrent', window );">Total current liabilities</a></td>
<td class="nump">706<span></span>
</td>
<td class="nump">688<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract', window );"><strong>Long-term liabilities</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetRetirementObligation', window );">Asset retirement obligation &#8211; Lik</a></td>
<td class="nump">125<span></span>
</td>
<td class="nump">125<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiability', window );">Operating lease liability</a></td>
<td class="nump">28<span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent', window );">Total long-term liabilities</a></td>
<td class="nump">153<span></span>
</td>
<td class="nump">125<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityAbstract', window );"><strong>Shareholders&#8217; equity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockValue', window );">Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at June 30, 2019 and December 31, 2018)</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockValue', window );">Common stock, $0.01 par value, authorized 100,000,000 shares (58,138,266 and 58,171,466 shares, respectively, issued and outstanding at June 30, 2019 and December 31, 2018)</a></td>
<td class="nump">581<span></span>
</td>
<td class="nump">582<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdditionalPaidInCapital', window );">Additional paid-in capital</a></td>
<td class="nump">70,036<span></span>
</td>
<td class="nump">69,873<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Accumulated deficit</a></td>
<td class="num">(44,808)<span></span>
</td>
<td class="num">(43,365)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest', window );">Total shareholders&#8217; equity</a></td>
<td class="nump">25,809<span></span>
</td>
<td class="nump">27,090<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LiabilitiesAndStockholdersEquity', window );">Total liabilities and shareholders&#8217; equity</a></td>
<td class="nump">$ 26,668<span></span>
</td>
<td class="nump">$ 27,903<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsPayableCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsPayableCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdditionalPaidInCapital">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(1))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdditionalPaidInCapital</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetRetirementObligation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 410<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=6392692&amp;loc=d3e7535-110849<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetRetirementObligation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6801-107765<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.9)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6676-107765<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AvailableForSaleSecuritiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AvailableForSaleSecuritiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesAndStockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(23))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(25))<br> -URI http://asc.fasb.org/extlink&amp;oid=119400593&amp;loc=d3e572229-122910<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(32))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesAndStockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.21)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MineralPropertiesNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Mineral properties, net of adjustments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 932<br> -SubTopic 360<br> -Section 25<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=96866604&amp;loc=d3e64895-109465<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MineralPropertiesNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiability">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=77888419&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiability</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=77888419&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of noncurrent assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PrepaidExpenseAndOtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PrepaidExpenseAndOtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(7))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(8))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PrepaidExpenseAndOtherAssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(3))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(4))<br> -URI http://asc.fasb.org/extlink&amp;oid=119400593&amp;loc=d3e572229-122910<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetainedEarningsAccumulatedDeficit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquityAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 16<br> -URI http://asc.fasb.org/extlink&amp;oid=108774443&amp;loc=SL4568740-111683<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 55<br> -Paragraph 4I<br> -URI http://asc.fasb.org/extlink&amp;oid=116874947&amp;loc=SL4590271-111686<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI http://asc.fasb.org/extlink&amp;oid=108774443&amp;loc=SL4568447-111683<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TimeDepositsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TimeDepositsAtCarryingValue</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<title></title>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6753027104">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares<br></strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract', window );"><strong>Preferred stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockParOrStatedValuePerShare', window );">Preferred stock, par value</a></td>
<td class="nump">$ 0.01<span></span>
</td>
<td class="nump">$ 0.01<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PreferredStockSharesAuthorized', window );">Preferred stock, shares authorized</a></td>
<td class="nump">10,000,000<span></span>
</td>
<td class="nump">10,000,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract', window );"><strong>Common stock</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value</a></td>
<td class="nump">$ 0.01<span></span>
</td>
<td class="nump">$ 0.01<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesAuthorized', window );">Common stock, shares authorized</a></td>
<td class="nump">100,000,000<span></span>
</td>
<td class="nump">100,000,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Common stock, shares issued</a></td>
<td class="nump">58,138,266<span></span>
</td>
<td class="nump">58,171,466<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common stock, shares outstanding</a></td>
<td class="nump">58,138,266<span></span>
</td>
<td class="nump">58,171,466<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockParOrStatedValuePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of common stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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</div></td></tr>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of common shares permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesOutstanding</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td>instant</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockParOrStatedValuePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PreferredStockSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PreferredStockSharesAuthorized</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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</body>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6756242928">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Operations - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeStatementAbstract', window );"><strong>Income Statement [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GainLossOnSaleOfProperties', window );">Revenue, net &#8211; mineral property sale</a></td>
<td class="text"> <span></span>
</td>
<td class="nump">$ 502<span></span>
</td>
<td class="nump">$ 408<span></span>
</td>
<td class="nump">$ 502<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CostsAndExpensesAbstract', window );"><strong>Costs, expenses and other:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_ExplorationExpenseMineralProperties', window );">Exploration expense</a></td>
<td class="nump">702<span></span>
</td>
<td class="nump">162<span></span>
</td>
<td class="nump">865<span></span>
</td>
<td class="nump">342<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DepreciationAndAmortization', window );">Depreciation</a></td>
<td class="nump">6<span></span>
</td>
<td class="nump">6<span></span>
</td>
<td class="nump">13<span></span>
</td>
<td class="nump">12<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_GeneralAndAdministrativeExpense', window );">General and administrative</a></td>
<td class="nump">321<span></span>
</td>
<td class="nump">762<span></span>
</td>
<td class="nump">746<span></span>
</td>
<td class="nump">1,165<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherCostAndExpenseOperating', window );">Total costs, expenses and other</a></td>
<td class="nump">1,029<span></span>
</td>
<td class="nump">930<span></span>
</td>
<td class="nump">1,624<span></span>
</td>
<td class="nump">1,519<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetInvestmentIncome', window );">Interest income (net)</a></td>
<td class="nump">90<span></span>
</td>
<td class="nump">37<span></span>
</td>
<td class="nump">162<span></span>
</td>
<td class="nump">63<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments', window );">Unrealized (loss) on marketable equity securities</a></td>
<td class="num">(63)<span></span>
</td>
<td class="num">(222)<span></span>
</td>
<td class="num">(389)<span></span>
</td>
<td class="num">(663)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherNonrecurringIncomeExpense', window );">Total other income (loss)</a></td>
<td class="nump">27<span></span>
</td>
<td class="num">(185)<span></span>
</td>
<td class="num">(227)<span></span>
</td>
<td class="num">(600)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">$ (1,002)<span></span>
</td>
<td class="num">$ (613)<span></span>
</td>
<td class="num">$ (1,443)<span></span>
</td>
<td class="num">$ (1,617)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasicAndDiluted', window );">Basic and diluted</a></td>
<td class="num">$ (0.02)<span></span>
</td>
<td class="num">$ (0.01)<span></span>
</td>
<td class="num">$ (0.02)<span></span>
</td>
<td class="num">$ (0.03)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract', window );"><strong>Weighted average shares outstanding:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted', window );">Basic and diluted</a></td>
<td class="nump">58,141<span></span>
</td>
<td class="nump">58,390<span></span>
</td>
<td class="nump">58,151<span></span>
</td>
<td class="nump">58,439<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_ExplorationExpenseMineralProperties">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Exploration expense mineral properties.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_ExplorationExpenseMineralProperties</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>XPL_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostsAndExpensesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostsAndExpensesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DepreciationAndAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DepreciationAndAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasicAndDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements.  Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period.  Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 7<br> -URI http://asc.fasb.org/extlink&amp;oid=117326831&amp;loc=d3e1337-109256<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareBasicAndDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfProperties">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=109226691&amp;loc=d3e2941-110230<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=109226348&amp;loc=d3e2443-110228<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GainLossOnSaleOfProperties</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GeneralAndAdministrativeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GeneralAndAdministrativeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeStatementAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeStatementAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118930883&amp;loc=SL7669619-108580<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI http://asc.fasb.org/extlink&amp;oid=116637391&amp;loc=SL114874048-224260<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1B<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118930883&amp;loc=SL7669625-108580<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(18))<br> -URI http://asc.fasb.org/extlink&amp;oid=116637232&amp;loc=SL114874131-224263<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(20))<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br><br>Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetInvestmentIncome">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(2))<br> -URI http://asc.fasb.org/extlink&amp;oid=116637232&amp;loc=SL114874131-224263<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetInvestmentIncome</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherCostAndExpenseOperating">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.3)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherCostAndExpenseOperating</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNonrecurringIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of other expense (income) that is infrequent in occurrence or unusual in nature.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=114868883&amp;loc=SL114871943-224233<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherNonrecurringIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period and/or any unrealized gains or losses on investments that are separately or otherwise not categorized as trading or available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6749613856">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Condensed Consolidated Statements of Cash Flows - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Operating activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">$ (1,443)<span></span>
</td>
<td class="num">$ (1,617)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Adjustments to reconcile net loss to net cash used in operating activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DepreciationAndAmortization', window );">Depreciation</a></td>
<td class="nump">13<span></span>
</td>
<td class="nump">12<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeaseAndRentalExpense', window );">Non-cash office lease expense</a></td>
<td class="nump">20<span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments', window );">Unrealized loss on marketable equity securities</a></td>
<td class="nump">389<span></span>
</td>
<td class="nump">663<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockOptionPlanExpense', window );">Employee stock option expense</a></td>
<td class="nump">173<span></span>
</td>
<td class="nump">442<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract', window );"><strong>Changes in operating assets and liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInPrepaidExpense', window );">Prepaid expenses and other assets</a></td>
<td class="nump">114<span></span>
</td>
<td class="nump">48<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable', window );">Note receivable, net of mineral property sold</a></td>
<td class="num">(223)<span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities', window );">Accounts payable and other current liabilities</a></td>
<td class="num">(38)<span></span>
</td>
<td class="nump">12<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivities', window );">Net cash used in operating activities</a></td>
<td class="num">(995)<span></span>
</td>
<td class="num">(440)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract', window );"><strong>Investing activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ProceedsFromSaleOfShortTermInvestments', window );">Sale of short-term investments, net</a></td>
<td class="nump">1,453<span></span>
</td>
<td class="nump">509<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsForPurchaseOfOtherAssets1', window );">Purchase of other assets</a></td>
<td class="text"> <span></span>
</td>
<td class="num">(8)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivities', window );">Net cash provided by investing activities</a></td>
<td class="nump">1,453<span></span>
</td>
<td class="nump">501<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract', window );"><strong>Financing activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PaymentsForRepurchaseOfCommonStock', window );">Purchase of common stock for cancellation</a></td>
<td class="num">(11)<span></span>
</td>
<td class="num">(65)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivities', window );">Net cash used in financing activities</a></td>
<td class="num">(11)<span></span>
</td>
<td class="num">(65)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect', window );">Net increase (decrease) in cash and cash equivalents</a></td>
<td class="nump">447<span></span>
</td>
<td class="num">(4)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents, beginning of period</a></td>
<td class="nump">117<span></span>
</td>
<td class="nump">214<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents, end of period</a></td>
<td class="nump">$ 564<span></span>
</td>
<td class="nump">$ 210<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6676-107765<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.1)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 230<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=98513438&amp;loc=d3e33268-110906<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DepreciationAndAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DepreciationAndAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period of the sum of amounts due within one year (or one business cycle) from customers for the credit sale of goods and services; and from note holders for outstanding loans.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOperatingAssetsAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInPrepaidExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInPrepaidExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LeaseAndRentalExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LeaseAndRentalExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3536-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3521-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash paid to purchase other assets as part of operating activities.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (g)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3536-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 17<br> -Subparagraph (f)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3367-108585<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 12<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3179-108585<br></p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of noncash expense for option under share-based payment arrangement.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period and/or any unrealized gains or losses on investments that are separately or otherwise not categorized as trading or available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746314240">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Business and Significant Accounting Policies<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Accounting Policies [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock', window );">Business and Significant Accounting Policies</a></td>
<td class="text"><p style="margin: 0pt"></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><b>1.&#160;&#160;&#160;&#160;&#160;&#160;&#160;Business
and Significant Accounting Policies</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Business and company formation</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario Zinc Corp. (&#8220;Solitario,&#8221;
or the &#8220;Company&#8221;) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities
and Exchange Commission (&#8220;SEC&#8221;). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly
owned subsidiary of Crown Resources Corporation (&#34;Crown&#34;). In July 1994, Solitario became a publicly traded company on
the Toronto Stock Exchange (the &#34;TSX&#34;) through its initial public offering. Solitario has been actively involved in mineral
exploration since 1993. Solitario&#8217;s primary business is to acquire exploration mineral properties or royalties and/or discover
economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the
development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties,
pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations,
or create a royalty with a third party that continues to advance the property. Solitario is primarily focused on the acquisition
and exploration of zinc-related exploration mineral properties, however Solitario will evaluate and potentially acquire other base
and precious metal mineral exploration properties. In addition to focusing on its mineral exploration properties, Solitario also
evaluates potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration
potential or business combinations that Solitario determines to be favorable to Solitario.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue in
the past from the sale of mineral properties, including the sale of certain mineral royalty properties in January 2019, discussed
below, and the sale in June 2018 of its interest in the royalty on the Yanacocha property. Revenues and / or proceeds from the
sale or joint venture of properties or assets have not been a consistent annual source of cash and would only occur in the future,
if at all, on an infrequent basis.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario currently considers its
carried interest in the Florida Canyon project and its interest in the Lik project to be its core mineral property assets. Nexa
Resources, Ltd. (&#8220;Nexa&#8221;), Solitario&#8217;s joint venture partner, is continuing the exploration and furtherance of
the Florida Canyon project and Solitario is monitoring progress at Florida Canyon. Solitario is working with its 50% joint venture
partner, Teck American Incorporated, a wholly owned subsidiary of Teck Resources Limited (both companies are referred to as &#8220;Teck&#8221;),
in the Lik deposit to further the exploration of, and to evaluate potential development plans, for the Lik project.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"><font style="color: windowtext">As
of June 30, 2019, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part,
to further the exploration of the Florida Canyon and Lik projects and to potentially acquire additional mineral property assets.
The</font> fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration
and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced
mineral exploration projects or other related assets at potentially attractive terms.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The accompanying interim condensed
consolidated financial statements of Solitario for the three and six months ended June 30, 2019 are unaudited and are prepared
in accordance with accounting principles generally accepted in the United States of America (&#8220;generally accepted accounting
principles&#8221;). They do not include all disclosures required by generally accepted accounting principles for annual financial
statements, but in the opinion of management, include all adjustments, consisting only of normal recurring items, necessary for
a fair presentation. Interim results are not necessarily indicative of results, which may be achieved in the future or for the
full year ending December 31, 2019.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">These financial statements should
be read in conjunction with the financial statements and notes thereto which are included in Solitario&#8217;s Annual Report on
Form 10-K for the year ended December 31, 2018. The accounting policies set forth in those annual financial statements are the
same as the accounting policies utilized in the preparation of these financial statements, except as modified for appropriate interim
financial statement presentation.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Recent Developments</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><u>Royalty sale</u></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 22, 2019, Solitario completed
the sale of its interest in certain royalties to SilverStream SEZC, a private Cayman Island royalty and streaming company (&#8220;SilverStream&#8221;)
for Cdn$600,000 (the &#8220;Royalty Sale&#8221;). The Royalty Sale covered (i) a royalty on the formerly Solitario-owned 125,000-acre
polymetallic Pedra Branca palladium, platinum, gold, nickel, cobalt and chrome project in Brazil, (ii) a royalty covering 3,880-acres
of non-producing exploration properties in Mexico, and (iii) a purchase option on 11 separate non-producing properties covering
over 16,500 acres in Montana. On closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and a convertible note from
SilverStream in the principal amount of Cdn$350,000 (the &#8220;SilverStream Note&#8221;). The SilverStream Note is due December
31, 2019, accrues 5% per annum simple interest, payable on a quarterly basis, and is convertible into common shares of SilverStream,
at the discretion of SilverStream, by providing Solitario a notice of conversion. Solitario recorded interest income of $3,000
and $6,000, respectively, from the SilverStream Note during the three and six months ended June 30, 2019. SilverStream may only
provide a notice of conversion if SilverStream has completed an initial public offering during the term of the SilverStream Note
for minimum proceeds of Cdn$5,000,000, otherwise the SilverStream note will be payable in cash at the maturity date. Pursuant to
the terms of the SilverStream Note, if converted, Solitario would receive common shares converted at 85% of the weighted average
quoted price of a share of SilverStream common stock for the most recent 10-day period prior to the notice of conversion. During
the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of
the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date
of the sale of $263,000 less the carrying value of the royalties sold of $40,000. As of June 30, 2019, the approximate fair value
of the SilverStream Note was $267,000, based upon the current US Dollar / Canadian Dollar exchange rate, and Solitario recorded
a credit to exchange gain and loss of $4,000, included in general and administrative expense during the six months ended June 30,
2019.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Financial reporting</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The consolidated financial statements
include the accounts of Solitario and its wholly owned subsidiaries. All significant intercompany accounts and transactions have
been eliminated in consolidation. The consolidated financial statements are prepared in accordance with generally accepted accounting
principles and are expressed in U.S. dollars.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Revenue recognition</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue from
the sale of exploration mineral properties and joint venture property payments. Solitario&#8217;s policy is to recognize revenue
from the sale of its exploration mineral properties (those without reserves) on a property by property basis, computed as the cash
received and / or expected collectable receivables less any capitalized cost. Payments received for the sale of exploration property
interests that are less than the properties cost are recorded as a reduction of the related property's capitalized cost. In addition,
Solitario&#8217;s policy is to recognize revenue on any receipts of joint venture property payments in excess of its capitalized
costs on a property that Solitario may lease to another mining company.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recognized revenue
during the six months ended June 30, 2019 of $408,000 related to the Royalty Sale, discussed above, in accordance with Accounting
Standards Codification (&#8220;ASC&#8221;) 606. In addition, Solitario recorded revenue during the second quarter of 2018 of $502,000
from the sale of its Yanacocha exploration mineral property. Solitario expects any property or asset sales in the future to be
on an infrequent basis. Prior to the sale of its Yanacocha exploration mineral property, the last proceeds from joint venture property
payments was in 2015 and Solitario does not expect to record joint venture property payments on any of its currently held properties
for the foreseeable future.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Use of estimates</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The preparation of financial statements
in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the
reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements
and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to: (i) Solitario&#8217;s
carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral exploration properties
and their future exploration potential; (iii) the fair value of stock option grants to employees, to officers and directors and
to others; (iv) the ability of Solitario to realize its deferred tax assets; (v) the collectability of the SilverStream Note; and
(vi) Solitario's investment in marketable equity securities.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In performing its activities, Solitario
has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral
property interests or the development of economically recoverable ore reserves and the ability of Solitario or its joint venture
partners to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable
operations, none of which is assured.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Cash equivalents </i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Cash equivalents include investments
in highly liquid money-market securities with original maturities of three months or less when purchased. As of June 30, 2019,
$553,000 of Solitario&#8217;s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered
under the Federal Deposit Insurance Corporation (&#8220;FDIC&#8221;) rules for the United States.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Short-term investments</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">As of June 30, 2019, Solitario has
$8,714,000 of its current assets in United States Treasury Securities (&#8220;USTS&#8221;) with maturities of 15 days to 18 months.
The USTS are recorded at their fair value, based upon quoted market prices and are not covered under the FDIC insurance rules for
United States deposits, with increases or decreases in fair market value recorded as interest income in the statement of operation
in the period. Solitario&#8217;s USTS are highly liquid and may be sold in their entirety at any time at their quoted market price
and are classified as a current asset.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Mineral properties </i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario expenses all exploration
costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a
feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations
of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets.
All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of
an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset
or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Leases</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for its leases
in accordance with ASC 842, <i>Leases</i> (&#8220;ASC 842&#8221;) by recognizing right-of-use assets and lease liabilities on the
condensed consolidated balance sheet and disclosing key information about lease arrangements. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption of ASC 842, as the initial date of transition and not to
restate comparative prior periods and to carry forward historical lease classification. In addition, Solitario has elected the
option not to apply the recognition of assets and liabilities provisions of ASC 842 to operating leases of less than one year.
See Note 4 &#8220;Operating Leases&#8221; for more information and disclosures regarding Solitario&#8217;s leases.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Fair value</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 820, <i>Fair Value measurement
(&#8220;ASC 820&#8221;)</i> established a framework for measuring fair value of financial instruments and required disclosures
about fair value measurements. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts
payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in
USTS, its marketable equity securities and any covered call options against those marketable equity securities are carried at their
estimated fair value based on quoted market prices. See Note 6, &#8220;Fair Value,&#8221; below.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Marketable equity securities</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario's investments in marketable
equity securities are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments
in marketable equity securities for investments in publicly traded marketable equity securities for which it does not exercise
significant control and where Solitario has no representation on the board of directors of those companies and exercises no control
over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification
method. Changes in fair value are recorded as unrealized gain or loss in the statement of operations.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Foreign exchange</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The United States dollar is the functional
currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2018 and
the first half of 2019 have been conducted primarily in Peru, a portion of the payments under the land, leasehold and exploration
agreements of Solitario are denominated in United States dollars. Realized foreign currency gains and losses are included in the
results of operations in the period in which they occur.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Income taxes</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for income taxes
in accordance with ASC 740, &#8220;Accounting for Income Taxes&#8221; (&#8220;ASC 740&#8221;). Under ASC 740, income taxes are
provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred
taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred
tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible
when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits
that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more
likely than not that some portion or all of the deferred tax assets will not be realized.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Accounting for uncertainty in income taxes</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 740 clarifies the accounting
for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and
measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in
a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods,
disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has
completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the
tax position in the future.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Earnings per share</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The calculation of basic and diluted
earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the three and six
months ended June 30, 2019 and 2018. Potentially dilutive shares related to outstanding common stock options of 4,373,000 and 4,025,228
for Solitario common shares for the three and six months ended June 30, 2019 and 2018, respectively, were excluded from the calculation
of diluted earnings (loss) per share because the effects were anti-dilutive.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Employee stock compensation and incentive plans</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario classifies all of its stock
options as equity options in accordance with the provisions of ASC 718, &#8220;Compensation &#8211; Stock Compensation.&#8221;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Recent accounting pronouncements</i></p>

<p style="font: 12pt Times New Roman, Times, Serif; margin-right: 30.6pt; margin-left: 0">&#160;</p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 1, 2019, Solitario
adopted Accounting Standards Update No. 2016-02 <i>Leases</i> (&#8220;ASU 2016-02&#8221;) which requires the application of ASC
842 and the recognition of right-of-use assets and related liabilities associated with all leases that are not short-term in nature.
As a result of the adoption of ASU 2016-02 on January 1, 2019, Solitario recorded both an operating lease asset for its Wheat Ridge
Colorado office of $82,000 and an operating lease liability of $82,000 related to the same lease. The adoption of ASU 2016-02 did
not require the recording of any other assets or liabilities on our condensed consolidated balance sheets and had an immaterial
effect on Solitario&#8217;s condensed consolidated statement of operations for the three and six months ended June 30, 2019, and
its condensed consolidated statement of cash flows for the six months ended June 30, 2019. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption, as the initial date of transition and not to restate comparative
prior periods and to carry forward historical lease classification. See Note 4 &#8220;Operating Leases&#8221; for more information
and disclosures regarding Solitario&#8217;s leases.</p>



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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6626935840">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Mineral Property<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_ExtractiveIndustriesAbstract', window );"><strong>Extractive Industries [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MineralIndustriesDisclosuresTextBlock', window );">Mineral Property</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in"><b>2.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Mineral
Property</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following table details Solitario&#8217;s investment
in Mineral Property:</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td colspan="2" style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">June 30,</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">December 31,</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Exploration</td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Lik project (Alaska &#8211; US)</td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$15,611&#160;</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$15,611&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;La Promesa (Peru)</td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">6&#160;</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">6&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Montana Royalty property (US)</td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">40&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;&#160;&#160;Total exploration mineral property</td>
    <td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$15,617&#160;</td>
    <td colspan="2" style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$15,657&#160;</td></tr>
<tr>
    <td style="width: 71%">&#160;</td>
    <td style="width: 14%">&#160;</td>
    <td style="width: 1%">&#160;</td>
    <td style="width: 14%">&#160;</td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0; text-indent: 0.5in">All exploration costs on our exploration
properties, none of which have proven and probable reserves, including any additional costs incurred for subsequent lease payments
or exploration activities related to our projects are expensed as incurred.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><u>Royalty Sale</u></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 22, 2019, Solitario completed
the Royalty Sale, discussed above under &#8220;Recent Developments&#8221; to SilverStream for Cdn$600,000. On closing of the Royalty
Sale, Solitario received Cdn$250,000 in cash and the SilverStream Note with a principal amount of Cdn$350,000, with a maturity
date of December 31, 2019. During the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 from
the Royalty Sale, consisting of the fair value of the cash received on the date of the sale of $185,000 and the fair value of the
SilverStream Note on the date of the sale of $263,000 less the carrying value of the royalties sold of $40,000.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0.5in; text-indent: -0.5in"><u>Exploration expense</u></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">The following items comprised exploration expense:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Three months ended<br />
&#160;June 30,</td>
    <td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Six months ended<br />
&#160;June 30,</td></tr>
<tr>
    <td style="vertical-align: top; width: 50%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td style="vertical-align: bottom; width: 11%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td>
    <td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td style="vertical-align: bottom; width: 13%; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Geologic and field expenses</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$680&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$&#160;&#160;21&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$827&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$&#160;&#160;45&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Administrative</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">22&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">141&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">38&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">297&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Total exploration costs</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$702&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$162&#160;</td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$865&#160;</td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$342&#160;</td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><u>Asset Retirement Obligation</u></p>




<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In connection with the acquisition
of its interest in the Lik project in 2017, Solitario has recorded an asset retirement obligation of $125,000 as of June 30, 2019
and December 31, 2018 for Solitario&#8217;s estimated reclamation cost of the existing disturbance at the Lik project. This disturbance
consists of an exploration camp including certain drill sites and access roads at the camp. The estimate is based upon Solitario&#8217;s
estimated cash costs for reclamation. Solitario has purchased a reclamation bond insurance policy for the bonding required by the
State of Alaska, in the event Solitario or its 50% partner, Teck, do not complete any required reclamation.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has not applied a discount
rate to the recorded asset retirement obligation as the estimated time frame for reclamation is not currently known, as reclamation
is not expected to occur until the end of the Lik project life, which would follow future development and operations, the start
of which cannot be estimated or assured at this time.</p><span></span>
</td>
</tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for mineral industries.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 930<br> -URI http://asc.fasb.org/topic&amp;trid=2155974<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 932<br> -URI http://asc.fasb.org/topic&amp;trid=2145477<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MineralIndustriesDisclosuresTextBlock</td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746184352">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Marketable Equity Securities<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract', window );"><strong>Investments, Debt and Equity Securities [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesTextBlock', window );">Marketable Equity Securities</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><b>3. &#160;&#160;&#160;&#160;&#160;&#160;&#160;Marketable
Equity Securities</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario's investments in marketable
equity securities are carried at fair value, which is based upon quoted prices of the securities owned. The cost of marketable
equity securities sold is determined by the specific identification method. Changes in market value are recorded in the condensed
consolidated statement of operations. During the three and six months ended June 30, 2019, Solitario recorded an unrealized loss
on marketable equity securities of $63,000 and $389,000, respectively. During the three and six months ended June 30, 2018, Solitario
recorded an unrealized loss on marketable equity securities of $222,000 and $663,000, respectively.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The following tables summarize Solitario&#8217;s
marketable equity securities and adjustments to fair value:</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: bottom">
    <td style="width: 72%; layout-grid-mode: line; text-align: justify">(in thousands)</td>
    <td style="width: 14%; border-bottom: Black 1pt solid">
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center">&#160;&#160;&#160;&#160;June 30,</p>
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center">2019</p></td>
    <td style="width: 14%; border-bottom: Black 1pt solid">
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center">&#160;December 31,</p>
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 4.5pt 0 0; text-align: center">2018</p></td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Marketable equity securities at cost</td>
    <td style="padding-right: 4.5pt; layout-grid-mode: line; text-align: right">$1,714&#160;</td>
    <td style="padding-right: 9pt; layout-grid-mode: line; text-align: right">$1,714&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Cumulative unrealized loss on marketable equity securities</td>
    <td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right">(518)</td>
    <td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right">&#160;&#160;&#160;(129)</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Marketable equity securities at fair value</td>
    <td style="border-bottom: Black 1pt solid; padding-right: 4.5pt; layout-grid-mode: line; text-align: right">$1,196&#160;</td>
    <td style="border-bottom: Black 1pt solid; padding-right: 9pt; layout-grid-mode: line; text-align: right">$1,585&#160;</td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following table represents changes, including sales,
in marketable equity securities during the three and six months ended June 30, 2019 and 2018:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Three months ended<br />
June 30,</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Six months ended<br />
June 30,</td></tr>
<tr style="vertical-align: bottom">
    <td style="width: 60%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td style="width: 9%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td>
    <td style="width: 10%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td style="width: 11%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Gross (loss) recorded in the statement of operations</td>
    <td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(63)</td>
    <td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(222)</td>
    <td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(389)</td>
    <td style="padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(663)</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Change in marketable equity securities at fair value</td>
    <td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(63)</td>
    <td style="border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(222)</td>
    <td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(389)</td>
    <td style="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$(663)</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario did not sell any marketable
equity securities during the three and six months ended June 30, 2019 or 2018 and the change in the fair value of marketable equity
securities was related entirely to the unrealized loss on marketable equity securities related to their fair values based upon
quoted market prices for the marketable equity securities held by Solitario during the periods.</p><span></span>
</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6625581248">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Operating Leases<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeasesAbstract', window );"><strong>Leases [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock', window );">Operating Leases</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><b>4.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Operating
Leases</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario adopted ASU 2016-02 effective
January 1, 2019 and accounts for its leases in accordance with ASC 842. Solitario leases one facility, its Wheat Ridge, Colorado
office (the &#8220;WR Lease&#8221;), that has a term of more than one year. Solitario has no other material operating lease costs.
The WR Lease is classified as an operating lease and has a term of 20 months at June 30, 2019, with no renewal option. At June
30, 2019, the right-of-use office lease asset for the WR Lease is classified as other assets and the related liability separated
between current and non-current office lease liabilities in the condensed consolidated balance sheet. Lease expense is recognized
on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred.
During the three and six months ended June 30, 2019, Solitario recognized $10,000 and $20,000, respectively, of non-cash lease
expense for the WR Lease included in general and administrative expense. Cash lease payments of $7,000 and $17,000, respectively,
were made on the WR Lease during the three and six months ended June 30, 2019 and this amount, less $1,000 and $2,000, respectively,
of imputed interest during the three and six months ended June 30, 2019, reduced the related liability on the WR Lease. The discount
rate within the WR Lease is not determinable and Solitario has applied a discount rate of 5% based upon Solitario&#8217;s estimate
of its cost of capital.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The maturities of Solitario&#8217;s lease liability for
its WR Lease are as follows at June 30, 2019:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 86%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Lease payments per year</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2019</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$&#160;&#160;&#160;20&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2020</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">42&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2021</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;7&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Total lease payments</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">69&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;Less amount of payments representing interest</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(2)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Present value of lease payments</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$&#160;&#160;67&#160;</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">The following is supplemental cash flow information related
to our operating lease for the six months ended June 30, 2019:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 83%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td style="vertical-align: bottom; width: 17%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Six months ended June 30, 2019</td></tr>
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    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Cash paid for amounts included in the measurement of lease liabilities</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Operating cash outflows from WR Lease payments</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$17&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Non-cash amounts related to the WR lease</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Leased assets recorded in exchange for new operating lease liabilities</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$82&#160;</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 10<br> -Section 55<br> -Paragraph 40<br> -Subparagraph (Note 1,3)<br> -URI http://asc.fasb.org/extlink&amp;oid=82846649&amp;loc=d3e38371-112697<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=77902758&amp;loc=d3e41499-112717<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=118943654&amp;loc=d3e12069-110248<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 20<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=77902758&amp;loc=d3e41502-112717<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=84164451&amp;loc=d3e36991-112694<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6920043488">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Other Assets<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
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<tr class="ro">
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">The following items comprised other assets:</p>

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    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">December 31</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
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<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.17)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746184896">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Fair Value<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract', window );"><strong>Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_FairValuesDisclosuresTextBlock', window );">Fair Value</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><b>6.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Fair
Value</b></p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; background-color: white">&#160;</p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in; background-color: white">Solitario
accounts for its financial instruments under ASC 820. For certain of Solitario&#8217;s financial instruments, including cash and
cash equivalents and payables, the carrying amounts approximate fair value due to their short-term maturities. Solitario&#8217;s
short-term investments in USTS, and marketable equity securities are carried at their estimated fair value primarily based on quoted
market prices. During the three and six months ended June 30, 2019 there were no reclassifications in financial assets or liabilities
between Level 1, 2 or 3 categories.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The following is a listing of Solitario&#8217;s
financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within
the hierarchy as of June 30, 2019:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&#160;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: bottom">
    <td style="width: 48%; layout-grid-mode: line; text-align: justify">(in thousands)</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: right">Level 1&#160;&#160;</td>
    <td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: right">Level 2&#160;&#160;</td>
    <td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: right">Level 3</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: right">Total&#160;&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line"><b>Assets</b></td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Short-term investments</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$8,714&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right; text-indent: -0.25in">$<font style="font: 7pt Times New Roman, Times, Serif">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$8,714&#160;</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0">&#160;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
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    <td style="width: 48%; layout-grid-mode: line">&#160;&#160;Marketable equity securities </td>
    <td style="width: 13%; padding-right: 6pt; layout-grid-mode: line; text-align: right">$1,196&#160;</td>
    <td style="width: 14%; padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</td>
    <td style="width: 12%; padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="width: 13%; padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$1,196&#160;</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-indent: 0.5in">The following is a listing of Solitario&#8217;s
financial assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within
the hierarchy as of December 31, 2018:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0; text-align: justify">&#160;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: bottom">
    <td style="width: 48%; layout-grid-mode: line; text-align: justify">(in thousands)</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: center">Level 1</td>
    <td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: center">Level 2</td>
    <td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: center">Level 3</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: center">Total</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line"><b>Assets</b></td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Short-term investments</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$10,223&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">$&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$10,223&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Marketable equity securities</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$&#160;&#160;1,585&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">$&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;1,585&#160;</td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746290496">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Income Taxes<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxDisclosureAbstract', window );"><strong>Income Tax Disclosure [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
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</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncomeTaxDisclosureTextBlock', window );">Income Taxes</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><b>7.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Income
Taxes</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for income taxes
in accordance with ASC 740. Under ASC 740, income taxes are provided for the tax effects of transactions reported in the financial
statements and consist of taxes currently due plus deferred taxes related to certain income and expenses recognized in different
periods for financial and income tax reporting purposes. Deferred tax assets and liabilities represent the future tax return consequences
of those differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred
taxes are also recognized for operating losses and tax credits that are available to offset future taxable income and income taxes,
respectively. A valuation allowance is provided if it is more likely than not that some portion or all of the deferred tax assets
will not be realized.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">At June 30, 2019 and December 31,
2018, a valuation allowance has been recorded, which fully offsets Solitario&#8217;s net deferred tax assets, because it is more
likely than not that the Company will not realize some portion or all of its deferred tax assets.&#160; The Company continually
assesses both positive and negative evidence to determine whether it is more likely than not that the deferred tax assets can be
realized prior to their expiration.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">During the three and six months ended
June 30, 2019 and 2018, Solitario recorded no current or deferred tax expense.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p><span></span>
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</tr>
</table>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -URI http://asc.fasb.org/topic&amp;trid=2144680<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6630232032">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Commitments and Contingencies<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingenciesDisclosureAbstract', window );"><strong>Commitments and Contingencies Disclosure [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock', window );">Commitments and Contingencies</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><b>8.&#160;&#160;&#160;&#160;&#160;&#160;&#160;Commitments
and contingencies</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded an asset retirement
obligation of $125,000 related to its Lik project in Alaska. See Note 2, &#8220;Mineral Property,&#8221; above.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In August of 2018, Solitario agreed
to fund a portion of a 2018 &#8211; 2019 drilling program at the Florida Canyon project. Pursuant to the agreement, Solitario will
fund up to $1,580,000 of a planned 41-hole 17,000-meter drilling program to be conducted through December 31, 2019 (the &#8220;Drilling
Program&#8221;). Upon Nexa completing the first 1,700 meters of the Drilling Program, Solitario will pay Nexa $527,000, upon completion
of the next 1,700 meters (3,400 meters total) of the Drilling Program, Solitario will pay Nexa $527,000, and upon completion of
the next 1,700 meters (5,100 meters total) of the Drilling Program, Solitario will pay Nexa the balance remaining on its $1,580,000
funding commitment, or $526,000. Solitario has no obligation to pay Nexa prior to the attainment of the separate 1,700-meter thresholds.
The funding commitments are in the form of an advance on Solitario&#8217;s commitment to fund 30% of any future development of
Florida Canyon under the existing joint venture agreement with Nexa. Accordingly, in the event Florida Canyon is developed, which
cannot be assured at this time, any funds paid to Nexa under this agreement, will reduce the amount of Solitario&#8217;s obligation
to fund 30% of future development costs, and / or repay loans from Nexa for future development costs at the Florida Canyon project.
During 2018, Nexa completed a total of 2,203 meters under the Drilling Program and Solitario recorded a charge to exploration expense
of $527,000, which Solitario paid during 2019. During the six months ended June 30, 2019, Nexa completed additional drilling to
meet the second required meter threshold of 1,700 meters (or a total of 3,400 meters). Solitario recorded a charge to exploration
expense of $527,000 during the three and six months ended June 30, 2019 and Solitario has recorded an account payable as of June
30, 2019 to Nexa of $527,000, which was paid in July 2019 for the completion of this second phase of the drilling during the six
months ended June 30, 2019. Should Nexa complete the remaining 1,700 meters (5,100 meters less the completed 3,400 meters) during
the remainder of 2019, Solitario will be obligated to pay Nexa the final tranche under the agreement of $526,000 during the remainder
of 2019.</p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for commitments and contingencies.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -URI http://asc.fasb.org/topic&amp;trid=2127136<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 440<br> -URI http://asc.fasb.org/topic&amp;trid=2144648<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6607977312">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Employee Stock Compensation Plans<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
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<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock', window );">Employee Stock Compensation Plans</a></td>
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Stock Compensation Plans</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On June 18, 2013, Solitario&#8217;s
shareholders approved the 2013 Solitario Exploration &#38; Royalty Corp. Omnibus Stock and Incentive Plan (the &#8220;2013 Plan&#8221;).
Under the terms of the 2013 Plan, a total of 1,750,000 shares of Solitario common stock were reserved for awards to directors,
officers, employees and consultants. On June 29, 2017, Solitario shareholders approved an amendment to the 2013 Plan, which increased
the number of shares of common stock available for issuance under the 2013 Plan from 1,750,000 to 5,750,000. Awards granted under
the 2013 Plan may take the form of stock options, stock appreciation rights, restricted stock, and restricted stock units. The
terms and conditions of the awards are pursuant to the 2013 Plan and are granted by the Board of Directors or a committee appointed
by the Board of Directors.</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">As of June 30, 2019, and December
31, 2018 there were options outstanding that are exercisable to acquire 4,373,000 and 5,223,160 shares, respectively, of Solitario
common stock, with option prices between $0.28 and $0.77 per share. During the three months ended June 30, 2019 and 2018 Solitario
did not grant any additional options. During the six months ended June 30, 2019, Solitario granted options exercisable to acquire
150,000 shares of common stock, with an exercise price of $0.28 per share, a five-year term, and a grant date fair value of $23,000
based upon a Black-Scholes model, with a 64% volatility and a 2.4% risk-free interest rate. In addition, during the six months
ended June 30, 2019, options exercisable to acquire 1,000,160 shares of common stock, with exercise prices between $1.68 and $0.70
per share, expired unexercised. During the six months ended June 30, 2018, Solitario granted options exercisable to acquire 100,000
shares of common stock to a consultant, with an exercise price of $0.62 per share, a seven-month term and a grant date fair value
of $12,000 based upon a Black-Scholes model with a 66% volatility and a 1% risk-free interest rate. There were no exercises of
options under the 2013 Plan during the three and six months ended June 30, 2019 and 2018. During the three and six months ended
June 30, 2019, Solitario recorded stock option compensation expense of $85,000 and $173,000, respectively. During the three and
six months ended June 30, 2018, Solitario recorded non-cash stock option compensation expense of $432,000 and $442,000, respectively.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On September 1, 2017, the Board of
Directors granted, subject to shareholder approval at the next meeting of shareholders, 2,300,000 stock options under the 2013
Plan to officers and members of the Board of Directors (the &#8220;Conditional Options&#8221;). The Conditional Options were approved
at Solitario&#8217;s annual meeting on June 19, 2018. The Conditional Options have a five-year life, an exercise price of $0.77
per share, and a grant date fair value of $970,000, based upon a Black-Scholes model with a volatility of 64%, and a risk-free
interest rate of 1.70%. The Conditional Options vest on the schedule of 25% on date of approval of the grant (June 19, 2018) and
25% on each of the next three anniversary dates of the date of grant (September 1, 2018, 2019 and 2020).</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">At June 30, 2019, the total unrecognized
stock option compensation cost related to non-vested options is $487,000 and is expected to be recognized over a weighted average
period of 19 months.</p>



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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -URI http://asc.fasb.org/topic&amp;trid=2228938<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6616102384">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Shareholders' Equity<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
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June 30, 2018:</u></p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 32%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"><font style="font-family: Times New Roman, Times, Serif">(in thousands, except</font></td>
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    <td style="vertical-align: bottom; width: 9%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 11%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 12%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Accumulated</td>
    <td style="vertical-align: bottom; width: 12%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
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    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Share amounts)</td>
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    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Other</td>
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    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
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    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
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    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Accumulated</font></td>
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    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shareholders&#8217;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shares</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Amount</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Capital</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Deficit</td>
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    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$69,312&#160;</b></td>
    <td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(40,343)</b></td>
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    <td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$30,129&#160;</b></td></tr>
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        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Cumulative-effect adjustment</p>
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">change in accounting principle</p></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
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    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">576&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(576)</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>-&#160;&#160;</b></td></tr>
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    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,434,566</b></td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>584</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>69,312&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>(39,767)</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 26.2pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>30,129&#160;</b></td></tr>
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    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Stock option expense</td>
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    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">442<b>&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">442&#160;</td></tr>
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    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Purchase of shares for cancellation</td>
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    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1)</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(64)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(65)</td></tr>
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    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,617)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,617)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at June 30, 2018 </b></td>
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    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$583</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$69,690&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(41,384)</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$28,889&#160;</b></td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">Solitario adopted Accounting Standards Update No. 2016-01
<i>Recognition and Measurement of Financial Assets and Financial Liabilities </i>(&#8220;ASU 2016-01&#8221;) in the first quarter
of 2018. ASU No. 2016-01 revised the classification and measurement of investment in certain equity investments and the presentation
of certain fair value changes for certain financial liabilities measured at fair value. ASU No. 2016-01 requires the change in
fair value of many equity investments to be recognized in net income. Solitario recorded a cumulative-effect adjustment for the
change in accounting principle to retained earnings of $576,000 related to the adoption of ASU 2016-01.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><u>Shareholders&#8217; Equity for the six months ended
June 30, 2019:</u></p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 36%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"><font style="font-family: Times New Roman, Times, Serif">(in thousands, except</font></td>
    <td style="vertical-align: bottom; width: 13%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 10%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 13%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Share amounts)</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Additional</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Total</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Paid-in</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Accumulated</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shareholders&#8217;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shares</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Amount</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Capital</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Deficit</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Equity</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at December 31, 2018</b></td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,171,466&#160;</b></td>
    <td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>582&#160;</b></td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$69,873&#160;</b></td>
    <td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(43,365)</b></td>
    <td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$27,090&#160;</b></td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Stock option expense</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">173<b>&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">173&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Purchase of shares for cancellation</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(33,200)</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1)</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(10)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(11)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Net loss</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,443)</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,443)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at June 30, 2019 </b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,138,266&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$581</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$70,036&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(44,808)</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$25,809&#160;</b></td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><u>Share Repurchase Program</u></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On October 28, 2015, Solitario&#8217;s
Board of Directors approved a share repurchase program that authorized Solitario to purchase up to two million shares of its outstanding
common stock. During 2018, Solitario&#8217;s Board of Directors extended the expiration date of the share repurchase program through
December 31, 2019. During the three months ended June 30, 2019 and 2018, Solitario purchased 5,300 and 92,566 shares of Solitario
common stock, respectively, for an aggregate purchase price of $2,000 and $39,000, respectively. During the six months ended June
30, 2019 and 2018, Solitario purchased 33,200 and 145,200 shares of Solitario common stock, respectively, for an aggregate purchase
price of $11,000 and $65,000, respectively. As of June 30, 2019, Solitario has purchased a total of 964,100 shares for an aggregate
purchase price of $460,000 under the share repurchase program since its inception.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>



<p style="margin: 0pt"></p><span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -URI http://asc.fasb.org/topic&amp;trid=2208762<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746295392">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Business and Significant Accounting Policies (Policies)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
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<td class="text">&#160;<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock', window );">1. Business and Significant Accounting Policies</a></td>
<td class="text"><p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><b>1.&#160;&#160;&#160;&#160;&#160;&#160;&#160;Business
and Significant Accounting Policies</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Business and company formation</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario Zinc Corp. (&#8220;Solitario,&#8221;
or the &#8220;Company&#8221;) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities
and Exchange Commission (&#8220;SEC&#8221;). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly
owned subsidiary of Crown Resources Corporation (&#34;Crown&#34;). In July 1994, Solitario became a publicly traded company on
the Toronto Stock Exchange (the &#34;TSX&#34;) through its initial public offering. Solitario has been actively involved in mineral
exploration since 1993. Solitario&#8217;s primary business is to acquire exploration mineral properties or royalties and/or discover
economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the
development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties,
pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations,
or create a royalty with a third party that continues to advance the property. Solitario is primarily focused on the acquisition
and exploration of zinc-related exploration mineral properties, however Solitario will evaluate and potentially acquire other base
and precious metal mineral exploration properties. In addition to focusing on its mineral exploration properties, Solitario also
evaluates potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration
potential or business combinations that Solitario determines to be favorable to Solitario.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue in
the past from the sale of mineral properties, including the sale of certain mineral royalty properties in January 2019, discussed
below, and the sale in June 2018 of its interest in the royalty on the Yanacocha property. Revenues and / or proceeds from the
sale or joint venture of properties or assets have not been a consistent annual source of cash and would only occur in the future,
if at all, on an infrequent basis.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario currently considers its
carried interest in the Florida Canyon project and its interest in the Lik project to be its core mineral property assets. Nexa
Resources, Ltd. (&#8220;Nexa&#8221;), Solitario&#8217;s joint venture partner, is continuing the exploration and furtherance of
the Florida Canyon project and Solitario is monitoring progress at Florida Canyon. Solitario is working with its 50% joint venture
partner, Teck American Incorporated, a wholly owned subsidiary of Teck Resources Limited (both companies are referred to as &#8220;Teck&#8221;),
in the Lik deposit to further the exploration of, and to evaluate potential development plans, for the Lik project.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in"><font style="color: windowtext">As
of June 30, 2019, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part,
to further the exploration of the Florida Canyon and Lik projects and to potentially acquire additional mineral property assets.
The</font> fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration
and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced
mineral exploration projects or other related assets at potentially attractive terms.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The accompanying interim condensed
consolidated financial statements of Solitario for the three and six months ended June 30, 2019 are unaudited and are prepared
in accordance with accounting principles generally accepted in the United States of America (&#8220;generally accepted accounting
principles&#8221;). They do not include all disclosures required by generally accepted accounting principles for annual financial
statements, but in the opinion of management, include all adjustments, consisting only of normal recurring items, necessary for
a fair presentation. Interim results are not necessarily indicative of results, which may be achieved in the future or for the
full year ending December 31, 2019.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">These financial statements should
be read in conjunction with the financial statements and notes thereto which are included in Solitario&#8217;s Annual Report on
Form 10-K for the year ended December 31, 2018. The accounting policies set forth in those annual financial statements are the
same as the accounting policies utilized in the preparation of these financial statements, except as modified for appropriate interim
financial statement presentation.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Recent Developments</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><u>Royalty sale</u></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 22, 2019, Solitario completed
the sale of its interest in certain royalties to SilverStream SEZC, a private Cayman Island royalty and streaming company (&#8220;SilverStream&#8221;)
for Cdn$600,000 (the &#8220;Royalty Sale&#8221;). The Royalty Sale covered (i) a royalty on the formerly Solitario-owned 125,000-acre
polymetallic Pedra Branca palladium, platinum, gold, nickel, cobalt and chrome project in Brazil, (ii) a royalty covering 3,880-acres
of non-producing exploration properties in Mexico, and (iii) a purchase option on 11 separate non-producing properties covering
over 16,500 acres in Montana. On closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and a convertible note from
SilverStream in the principal amount of Cdn$350,000 (the &#8220;SilverStream Note&#8221;). The SilverStream Note is due December
31, 2019, accrues 5% per annum simple interest, payable on a quarterly basis, and is convertible into common shares of SilverStream,
at the discretion of SilverStream, by providing Solitario a notice of conversion. Solitario recorded interest income of $3,000
and $6,000, respectively, from the SilverStream Note during the three and six months ended June 30, 2019. SilverStream may only
provide a notice of conversion if SilverStream has completed an initial public offering during the term of the SilverStream Note
for minimum proceeds of Cdn$5,000,000, otherwise the SilverStream note will be payable in cash at the maturity date. Pursuant to
the terms of the SilverStream Note, if converted, Solitario would receive common shares converted at 85% of the weighted average
quoted price of a share of SilverStream common stock for the most recent 10-day period prior to the notice of conversion. During
the six months ended June 30, 2019, Solitario recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of
the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date
of the sale of $263,000 less the carrying value of the royalties sold of $40,000. As of June 30, 2019, the approximate fair value
of the SilverStream Note was $267,000, based upon the current US Dollar / Canadian Dollar exchange rate, and Solitario recorded
a credit to exchange gain and loss of $4,000, included in general and administrative expense during the six months ended June 30,
2019.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Financial reporting</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The consolidated financial statements
include the accounts of Solitario and its wholly owned subsidiaries. All significant intercompany accounts and transactions have
been eliminated in consolidation. The consolidated financial statements are prepared in accordance with generally accepted accounting
principles and are expressed in U.S. dollars.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Revenue recognition</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recorded revenue from
the sale of exploration mineral properties and joint venture property payments. Solitario&#8217;s policy is to recognize revenue
from the sale of its exploration mineral properties (those without reserves) on a property by property basis, computed as the cash
received and / or expected collectable receivables less any capitalized cost. Payments received for the sale of exploration property
interests that are less than the properties cost are recorded as a reduction of the related property's capitalized cost. In addition,
Solitario&#8217;s policy is to recognize revenue on any receipts of joint venture property payments in excess of its capitalized
costs on a property that Solitario may lease to another mining company.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario has recognized revenue
during the six months ended June 30, 2019 of $408,000 related to the Royalty Sale, discussed above, in accordance with Accounting
Standards Codification (&#8220;ASC&#8221;) 606. In addition, Solitario recorded revenue during the second quarter of 2018 of $502,000
from the sale of its Yanacocha exploration mineral property. Solitario expects any property or asset sales in the future to be
on an infrequent basis. Prior to the sale of its Yanacocha exploration mineral property, the last proceeds from joint venture property
payments was in 2015 and Solitario does not expect to record joint venture property payments on any of its currently held properties
for the foreseeable future.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Use of estimates</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The preparation of financial statements
in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the
reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements
and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to: (i) Solitario&#8217;s
carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral exploration properties
and their future exploration potential; (iii) the fair value of stock option grants to employees, to officers and directors and
to others; (iv) the ability of Solitario to realize its deferred tax assets; (v) the collectability of the SilverStream Note; and
(vi) Solitario's investment in marketable equity securities.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">In performing its activities, Solitario
has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral
property interests or the development of economically recoverable ore reserves and the ability of Solitario or its joint venture
partners to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable
operations, none of which is assured.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Cash equivalents </i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Cash equivalents include investments
in highly liquid money-market securities with original maturities of three months or less when purchased. As of June 30, 2019,
$553,000 of Solitario&#8217;s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered
under the Federal Deposit Insurance Corporation (&#8220;FDIC&#8221;) rules for the United States.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Short-term investments</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">As of June 30, 2019, Solitario has
$8,714,000 of its current assets in United States Treasury Securities (&#8220;USTS&#8221;) with maturities of 15 days to 18 months.
The USTS are recorded at their fair value, based upon quoted market prices and are not covered under the FDIC insurance rules for
United States deposits, with increases or decreases in fair market value recorded as interest income in the statement of operation
in the period. Solitario&#8217;s USTS are highly liquid and may be sold in their entirety at any time at their quoted market price
and are classified as a current asset.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Mineral properties </i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario expenses all exploration
costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a
feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations
of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets.
All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of
an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset
or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Leases</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for its leases
in accordance with ASC 842, <i>Leases</i> (&#8220;ASC 842&#8221;) by recognizing right-of-use assets and lease liabilities on the
condensed consolidated balance sheet and disclosing key information about lease arrangements. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption of ASC 842, as the initial date of transition and not to
restate comparative prior periods and to carry forward historical lease classification. In addition, Solitario has elected the
option not to apply the recognition of assets and liabilities provisions of ASC 842 to operating leases of less than one year.
See Note 4 &#8220;Operating Leases&#8221; for more information and disclosures regarding Solitario&#8217;s leases.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Fair value</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 820, <i>Fair Value measurement
(&#8220;ASC 820&#8221;)</i> established a framework for measuring fair value of financial instruments and required disclosures
about fair value measurements. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts
payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in
USTS, its marketable equity securities and any covered call options against those marketable equity securities are carried at their
estimated fair value based on quoted market prices. See Note 6, &#8220;Fair Value,&#8221; below.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Marketable equity securities</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario's investments in marketable
equity securities are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments
in marketable equity securities for investments in publicly traded marketable equity securities for which it does not exercise
significant control and where Solitario has no representation on the board of directors of those companies and exercises no control
over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification
method. Changes in fair value are recorded as unrealized gain or loss in the statement of operations.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Foreign exchange</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The United States dollar is the functional
currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2018 and
the first half of 2019 have been conducted primarily in Peru, a portion of the payments under the land, leasehold and exploration
agreements of Solitario are denominated in United States dollars. Realized foreign currency gains and losses are included in the
results of operations in the period in which they occur.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Income taxes</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario accounts for income taxes
in accordance with ASC 740, &#8220;Accounting for Income Taxes&#8221; (&#8220;ASC 740&#8221;). Under ASC 740, income taxes are
provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred
taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred
tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible
when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits
that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more
likely than not that some portion or all of the deferred tax assets will not be realized.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Accounting for uncertainty in income taxes</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">ASC 740 clarifies the accounting
for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and
measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in
a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods,
disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has
completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the
tax position in the future.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Earnings per share</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">The calculation of basic and diluted
earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the three and six
months ended June 30, 2019 and 2018. Potentially dilutive shares related to outstanding common stock options of 4,373,000 and 4,025,228
for Solitario common shares for the three and six months ended June 30, 2019 and 2018, respectively, were excluded from the calculation
of diluted earnings (loss) per share because the effects were anti-dilutive.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0.5in; text-indent: -0.5in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Employee stock compensation and incentive plans</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">Solitario classifies all of its stock
options as equity options in accordance with the provisions of ASC 718, &#8220;Compensation &#8211; Stock Compensation.&#8221;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>&#160;</i></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0"><i>Recent accounting pronouncements</i></p>

<p style="font: 12pt Times New Roman, Times, Serif; margin-right: 30.6pt; margin-left: 0">&#160;</p>

<p style="font: 10pt/12pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0; text-indent: 0.5in">On January 1, 2019, Solitario
adopted Accounting Standards Update No. 2016-02 <i>Leases</i> (&#8220;ASU 2016-02&#8221;) which requires the application of ASC
842 and the recognition of right-of-use assets and related liabilities associated with all leases that are not short-term in nature.
As a result of the adoption of ASU 2016-02 on January 1, 2019, Solitario recorded both an operating lease asset for its Wheat Ridge
Colorado office of $82,000 and an operating lease liability of $82,000 related to the same lease. The adoption of ASU 2016-02 did
not require the recording of any other assets or liabilities on our condensed consolidated balance sheets and had an immaterial
effect on Solitario&#8217;s condensed consolidated statement of operations for the three and six months ended June 30, 2019, and
its condensed consolidated statement of cash flows for the six months ended June 30, 2019. Solitario has elected the practical
expedient option to use January 1, 2019, the effective date of adoption, as the initial date of transition and not to restate comparative
prior periods and to carry forward historical lease classification. See Note 4 &#8220;Operating Leases&#8221; for more information
and disclosures regarding Solitario&#8217;s leases.</p><span></span>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746231888">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Mineral Property (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_ExtractiveIndustriesAbstract', window );"><strong>Extractive Industries [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentTextBlock', window );">Investment in Mineral Property</a></td>
<td class="text"><table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td colspan="2" style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">June 30,</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">December 31,</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td colspan="2" style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Exploration</td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td colspan="2" style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
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&#160;June 30,</td>
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&#160;June 30,</td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.</p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6627534080">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Marketable Equity Securities (Tables)<br></strong></div></th>
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June 30,</td>
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    <td style="width: 60%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of realized and unrealized gain (loss) on investment in security.</p></div>
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<td><strong> Period Type:</strong></td>
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</div></td></tr>
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<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6745062832">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Operating Leases (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeasesAbstract', window );"><strong>Leases [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock', window );">Maturities of Lease Liability</a></td>
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<tr>
    <td style="vertical-align: top; width: 86%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Lease payments per year</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2019</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$&#160;&#160;&#160;20&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2020</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">42&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;2021</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;7&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Total lease payments</td>
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<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;Less amount of payments representing interest</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(2)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Present value of lease payments</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$&#160;&#160;67&#160;</td></tr>
</table><span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeaseCostTableTextBlock', window );">Supplemental Cash Flow for Operating Lease</a></td>
<td class="text"><table cellspacing="0" cellpadding="0" style="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 83%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td style="vertical-align: bottom; width: 17%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Six months ended June 30, 2019</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Cash paid for amounts included in the measurement of lease liabilities</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Operating cash outflows from WR Lease payments</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$17&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Non-cash amounts related to the WR lease</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;&#160;&#160;Leased assets recorded in exchange for new operating lease liabilities</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$82&#160;</td></tr>
</table><span></span>
</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -URI http://asc.fasb.org/extlink&amp;oid=77888426&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LeasesAbstract</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=77888426&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<title></title>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746207424">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Other Assets (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract', window );"><strong>Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfOtherAssetsTableTextBlock', window );">Other Assets</a></td>
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<tr>
    <td style="vertical-align: top; width: 72%; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">(in thousands)</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">June 30,</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">December 31</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2019</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 8.1pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">2018</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Furniture and fixtures, net of accumulated depreciation</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$&#160;&#160;&#160;33&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;$&#160;&#160;&#160;36&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Lik project equipment, net of accumulated depreciation</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">60&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">70&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Exploration bonds and other assets</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;4&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;&#160;4&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 0.55in; padding-left: 5.4pt; layout-grid-mode: line">Office lease asset</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">64&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">&#160;-&#160;&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 30.6pt; padding-left: 5.4pt; layout-grid-mode: line">Total other assets</td>
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    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.9pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">$110&#160;</td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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</html>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6608361504">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Fair Value (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_NotesToFinancialStatementsAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock', window );">Financial Assets and Liabilities Measured at Fair Value</a></td>
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<tr style="vertical-align: bottom">
    <td style="width: 48%; layout-grid-mode: line; text-align: justify">(in thousands)</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: right">Level 1&#160;&#160;</td>
    <td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: right">Level 2&#160;&#160;</td>
    <td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: right">Level 3</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: right">Total&#160;&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line"><b>Assets</b></td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Short-term investments</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$8,714&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right; text-indent: -0.25in">$<font style="font: 7pt Times New Roman, Times, Serif">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$8,714&#160;</td></tr>

<tr style="vertical-align: bottom">
    <td style="width: 48%; layout-grid-mode: line">&#160;&#160;Marketable equity securities </td>
    <td style="width: 13%; padding-right: 6pt; layout-grid-mode: line; text-align: right">$1,196&#160;</td>
    <td style="width: 14%; padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</td>
    <td style="width: 12%; padding-right: 3pt; padding-left: 0.5in; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="width: 13%; padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$1,196&#160;</td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 26.1pt 0 0">&#160;&#160;</p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: bottom">
    <td style="width: 48%; layout-grid-mode: line; text-align: justify">(in thousands)</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 6pt; layout-grid-mode: line; text-align: center">Level 1</td>
    <td style="width: 14%; border-bottom: Black 1pt solid; padding-right: 8.25pt; layout-grid-mode: line; text-align: center">Level 2</td>
    <td style="width: 12%; border-bottom: Black 1pt solid; padding-right: 3pt; layout-grid-mode: line; text-align: center">Level 3</td>
    <td style="width: 13%; border-bottom: Black 1pt solid; padding-right: 5.25pt; layout-grid-mode: line; text-align: center">Total</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line"><b>Assets</b></td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Short-term investments</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$10,223&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">$&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$10,223&#160;</td></tr>
<tr style="vertical-align: bottom">
    <td style="layout-grid-mode: line">&#160;&#160;Marketable equity securities</td>
    <td style="padding-right: 6pt; layout-grid-mode: line; text-align: right">$&#160;&#160;1,585&#160;</td>
    <td style="padding-right: 8.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 3pt; layout-grid-mode: line; text-align: right">$&#160;&#160;-&#160;&#160;&#160;</td>
    <td style="padding-right: 5.25pt; layout-grid-mode: line; text-align: right">$&#160;&#160;1,585&#160;</td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746207424">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Shareholders' Equity (Tables)<br></strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th"><div>Jun. 30, 2019</div></th></tr>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_EquityAbstract', window );"><strong>Equity [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
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<td class="text"><table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr>
    <td style="vertical-align: top; width: 32%; padding-right: 5.4pt; padding-left: 5.4pt; font-family: Courier New, Courier, Monospace"><font style="font-family: Times New Roman, Times, Serif">(in thousands, except</font></td>
    <td style="vertical-align: bottom; width: 10%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 9%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 11%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 12%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Accumulated</td>
    <td style="vertical-align: bottom; width: 12%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Share amounts)</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Additional</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Other</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Total</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Paid-in</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Accumulated</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Comprehensive</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shareholders&#8217;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shares</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Amount</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Capital</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Deficit</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Income</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Equity</td></tr>
<tr style="vertical-align: bottom">
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at December 31, 2017</b></td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,434,566</b></td>
    <td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>584&#160;</b></td>
    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$69,312&#160;</b></td>
    <td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(40,343)</b></td>
    <td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$&#160;&#160;&#160;576&#160;</b></td>
    <td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$30,129&#160;</b></td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt">
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">Cumulative-effect adjustment</p>
        <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">change in accounting principle</p></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">576&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(576)</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>-&#160;&#160;</b></td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Adjusted balance January 1, 2018</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,434,566</b></td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>584</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>69,312&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>(39,767)</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 26.2pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>30,129&#160;</b></td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Stock option expense</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">442<b>&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">442&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Purchase of shares for cancellation</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(145,200)</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1)</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(64)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(65)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Net loss</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,617)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,617)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at June 30, 2018 </b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,289,366</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$583</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$69,690&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(41,384)</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$&#160;&#160;&#160;&#160;-&#160;&#160;&#160;&#160;&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$28,889&#160;</b></td></tr>
</table>
<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 30.6pt 0 0">&#160;&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0.55in 0 0"><u>Shareholders&#8217; Equity for the six months ended
June 30, 2019:</u></p>

<table cellspacing="0" cellpadding="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
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    <td style="vertical-align: bottom; width: 10%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 13%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; width: 14%; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Share amounts)</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Common</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Additional</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Total</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Stock</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Paid-in</td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; text-align: center; font-family: CG Times (W1)"><font style="font-family: Times New Roman, Times, Serif">Accumulated</font></td>
    <td style="vertical-align: bottom; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shareholders&#8217;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">&#160;</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Shares</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Amount</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center; text-indent: -5.4pt">Capital</td>
    <td style="vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: -5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: center">Deficit</td>
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<tr style="vertical-align: bottom">
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    <td style="padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,171,466&#160;</b></td>
    <td style="padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>582&#160;</b></td>
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    <td style="padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(43,365)</b></td>
    <td style="padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$27,090&#160;</b></td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Stock option expense</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">173<b>&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>- &#160;&#160;</b></td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">173&#160;</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Purchase of shares for cancellation</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(33,200)</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1)</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(10)</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(11)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line">Net loss</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">-&#160;&#160;&#160;</td>
    <td style="vertical-align: bottom; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,443)</td>
    <td style="vertical-align: bottom; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right">(1,443)</td></tr>
<tr>
    <td style="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line"><b>Balance at June 30, 2019 </b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>58,138,266&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: -0.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$581</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$70,036&#160;</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.75pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$(44,808)</b></td>
    <td style="vertical-align: bottom; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 2.15pt; padding-left: 5.4pt; layout-grid-mode: line; text-align: right"><b>$25,809&#160;</b></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for shareholders' equity and share-based payment arrangement. Includes, but is not limited to, disclosure of policy and terms of share-based payment arrangement, deferred compensation arrangement, and employee stock purchase plan (ESPP).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -URI http://asc.fasb.org/topic&amp;trid=2208762<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -URI http://asc.fasb.org/topic&amp;trid=2228938<br></p></div>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6749924736">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Business and Significant Accounting Policies (Details Narrative) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Accounting Policies [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestIncomeOther', window );">Interest income received from convertible note</a></td>
<td class="nump">$ 3<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">$ 6<span></span>
</td>
<td class="text">&#160;<span></span>
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<tr class="re">
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<td class="text"> <span></span>
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<td class="nump">$ 502<span></span>
</td>
<td class="nump">408<span></span>
</td>
<td class="nump">$ 502<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RoyaltyIncomeNonoperating', window );">Fair value of cash received on date of sale</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">185<span></span>
</td>
<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInNotesReceivables', window );">Fair value of note received for royalty sale less carrying value</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">263<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_CarryingValueAssetsSold', window );">Value of assets sold in royalty sale</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">40<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NotesReceivableFairValueDisclosure', window );">Approximate fair value of SilverStream note</a></td>
<td class="nump">267<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">267<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ConversionGainsAndLossesOnForeignInvestments', window );">Charge to exchange gain/loss for royalty sale</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4<span></span>
</td>
<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestBearingForeignDepositMoneyMarket', window );">Cash and cash equivalents held in brokerage accounts and foreign banks</a></td>
<td class="nump">553<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">553<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">$ 8,714<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">$ 8,714<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Potentially dilutive shares related to outstanding common stock options</a></td>
<td class="nump">4,373,000<span></span>
</td>
<td class="nump">4,025,228<span></span>
</td>
<td class="nump">4,373,000<span></span>
</td>
<td class="nump">4,025,228<span></span>
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<td class="nump">$ 82<span></span>
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<td class="text">&#160;<span></span>
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<td class="nump">$ 82<span></span>
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<td class="text">&#160;<span></span>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Value of assets sold in royalty sale</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=6371337&amp;loc=d3e3550-109257<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConversionGainsAndLossesOnForeignInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Represents gains or losses resulting from transactions conducted in foreign currencies.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 20<br> -Section 35<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=118948100&amp;loc=d3e30226-110892<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConversionGainsAndLossesOnForeignInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfProperties">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=109226691&amp;loc=d3e2941-110230<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI http://asc.fasb.org/extlink&amp;oid=109226348&amp;loc=d3e2443-110228<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GainLossOnSaleOfProperties</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInNotesReceivables">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInNotesReceivables</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestBearingForeignDepositMoneyMarket">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of interest-bearing money market demand account deposit liabilities in foreign banking offices.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 235<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-05(a))<br> -URI http://asc.fasb.org/extlink&amp;oid=6882215&amp;loc=d3e537907-122884<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.12)<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestBearingForeignDepositMoneyMarket</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestIncomeOther">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of interest income earned from interest bearing assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestIncomeOther</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NotesReceivableFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.3(b))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NotesReceivableFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseRightOfUseAsset">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's right to use underlying asset under operating lease.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=77888419&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseRightOfUseAsset</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RoyaltyIncomeNonoperating">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Ancillary revenue earned during the period from the consideration paid to the entity for the use of its rights and property by another party. Examples include licensing the use of copyrighted materials and leasing the extraction of natural resources.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.7)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RoyaltyIncomeNonoperating</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_USGovernmentSecuritiesAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Debt (bills, notes or bonds) that are issued by the government of the United States which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_USGovernmentSecuritiesAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6743687232">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Mineral Property - Investment in Mineral Property (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LikProjectAlaskaUSMember', window );">Lik Project Alaska (US)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_MineralPropertyExplorationExpense', window );">Exploration</a></td>
<td class="nump">$ 15,611<span></span>
</td>
<td class="nump">$ 15,611<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LaPromesaPeruMember', window );">La Promesa (Peru)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_MineralPropertyExplorationExpense', window );">Exploration</a></td>
<td class="nump">6<span></span>
</td>
<td class="nump">6<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_MontanaRoyaltyPropertyUSMember', window );">MontanaRoyalty property (US)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_MineralPropertyExplorationExpense', window );">Exploration</a></td>
<td class="text"> <span></span>
</td>
<td class="nump">$ 40<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_MineralPropertyExplorationExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_MineralPropertyExplorationExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>XPL_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LikProjectAlaskaUSMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LikProjectAlaskaUSMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LaPromesaPeruMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_LaPromesaPeruMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_MontanaRoyaltyPropertyUSMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=XPL_MontanaRoyaltyPropertyUSMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>35
<FILENAME>R25.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6745135584">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Mineral Property - Exploration Expense (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_ExtractiveIndustriesAbstract', window );"><strong>Extractive Industries [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CostOfOtherPropertyOperatingExpense', window );">Geologic and field expenses</a></td>
<td class="nump">$ 680<span></span>
</td>
<td class="nump">$ 21<span></span>
</td>
<td class="nump">$ 827<span></span>
</td>
<td class="nump">$ 45<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherGeneralAndAdministrativeExpense', window );">Administrative</a></td>
<td class="nump">22<span></span>
</td>
<td class="nump">141<span></span>
</td>
<td class="nump">38<span></span>
</td>
<td class="nump">297<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_ExplorationExpenseMineralProperties', window );">Total exploration costs</a></td>
<td class="nump">$ 702<span></span>
</td>
<td class="nump">$ 162<span></span>
</td>
<td class="nump">$ 865<span></span>
</td>
<td class="nump">$ 342<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_ExplorationExpenseMineralProperties">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Exploration expense mineral properties.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_ExplorationExpenseMineralProperties</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>XPL_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_ExtractiveIndustriesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_ExtractiveIndustriesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>srt_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostOfOtherPropertyOperatingExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Other operating costs incurred during the reporting period and may include amounts paid to maintain the property.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostOfOtherPropertyOperatingExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherGeneralAndAdministrativeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of general and administrative expense classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.4)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherGeneralAndAdministrativeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>36
<FILENAME>R26.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6630157136">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Mineral Property (Details Narrative) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_srt_ExtractiveIndustriesAbstract', window );"><strong>Extractive Industries [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MineReclamationAndClosingLiabilityNoncurrent', window );">Lik asset retirement obligation</a></td>
<td class="nump">$ 125<span></span>
</td>
<td class="nump">$ 125<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_ExtractiveIndustriesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_ExtractiveIndustriesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>srt_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MineReclamationAndClosingLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of a reclamation and mine closing liability that is associated with a legal obligation for the closure and reclamation of a mine including the removal of buildings, equipment, machinery and other physical remnants of mining, closure of tailings impoundments, leach pads and other mine features, and contouring, covering and revegetation of waste rock piles and other disturbed areas.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 5.Y.Q2)<br> -URI http://asc.fasb.org/extlink&amp;oid=27011672&amp;loc=d3e149879-122751<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MineReclamationAndClosingLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>37
<FILENAME>R27.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
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							}</script>
</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6630236256">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Marketable Equity Securities - Marketable Securitiesand Adjustment to Fair Value (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract', window );"><strong>Investments, Debt and Equity Securities [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AvailableForSaleSecurities', window );">Marketable equity securities at cost</a></td>
<td class="nump">$ 1,714<span></span>
</td>
<td class="nump">$ 1,714<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax', window );">Cumulative unrealized loss on marketable equity securities</a></td>
<td class="num">(518)<span></span>
</td>
<td class="num">(129)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Marketable equity securities at fair value</a></td>
<td class="nump">$ 1,196<span></span>
</td>
<td class="nump">$ 1,585<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AvailableForSaleSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AvailableForSaleSecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before tax of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentsFairValueDisclosure</td>
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<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6910060784">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Marketable Equity Securities - Changes in Marketable Securities (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract', window );"><strong>Investments, Debt and Equity Securities [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesGainLoss', window );">Gross (loss) recorded in the statement of operations</a></td>
<td class="num">$ (63)<span></span>
</td>
<td class="num">$ (222)<span></span>
</td>
<td class="num">$ (389)<span></span>
</td>
<td class="num">$ (663)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_MarketableSecuritiesGainLoss', window );">Change in marketable equity securities at fair value</a></td>
<td class="num">$ (63)<span></span>
</td>
<td class="num">$ (222)<span></span>
</td>
<td class="num">$ (389)<span></span>
</td>
<td class="num">$ (663)<span></span>
</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6910708800">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Marketable Equity Securities (Details Narrative) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract', window );"><strong>Investments, Debt and Equity Securities [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments', window );">Unrealized loss on marketable equity securities</a></td>
<td class="nump">$ 63<span></span>
</td>
<td class="nump">$ 222<span></span>
</td>
<td class="nump">$ 389<span></span>
</td>
<td class="nump">$ 663<span></span>
</td>
</tr>
</table>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period and/or any unrealized gains or losses on investments that are separately or otherwise not categorized as trading or available-for-sale.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnrealizedGainLossOnMarketableSecuritiesCostMethodInvestmentsAndOtherInvestments</td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6742611168">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Operating Leases - Maturities of Lease Liability (Details)<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Jun. 30, 2019 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeasesAbstract', window );"><strong>Leases [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear', window );">2019</a></td>
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<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo', window );">2020</a></td>
<td class="nump">42<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree', window );">2021</a></td>
<td class="nump">7<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue', window );">Total lease payments</a></td>
<td class="nump">69<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments', window );">Less amount of payments representing interest</a></td>
<td class="num">(2)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments', window );">Present value of lease payments</a></td>
<td class="nump">$ 67<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount necessary to reduce net minimum lease payments to present value for capital leases.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=84164817&amp;loc=d3e45280-112737<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments</td>
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<td>credit</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payments for operating lease.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=77888426&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Principal amount of long-term debt and capital lease obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Principal amount of long-term debt and capital lease obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of long-term debt and capital lease obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>41
<FILENAME>R31.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6623925712">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Operating Leases - Supplemental Cash Flow for Operating Lease (Details)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr><th class="th">
<div>Jun. 30, 2019 </div>
<div>USD ($)</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeasesAbstract', window );"><strong>Leases [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations', window );">Operating cash outflows from WR Lease payments</a></td>
<td class="nump">$ 17<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_CapitalLeaseAssetsRecorded', window );">Leased assets recorded in exchange for new operating lease liabilities</a></td>
<td class="nump">$ 82<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_CapitalLeaseAssetsRecorded">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Capital lease assets recorded</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_CapitalLeaseAssetsRecorded</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>XPL_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LeasesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LeasesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RepaymentsOfLongTermCapitalLeaseObligations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>42
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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							e.nextSibling.style.display='block';
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</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6906104832">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Operating Leases (Details Narrative) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
<th class="th" colspan="1">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_LeasesAbstract', window );"><strong>Leases [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AmortizationOfLeasedAsset', window );">Non-cash lease expense recognized</a></td>
<td class="nump">$ 10<span></span>
</td>
<td class="nump">$ 20<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OperatingLeasePayments', window );">Cash lease payments</a></td>
<td class="nump">7<span></span>
</td>
<td class="nump">17<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease', window );">Imputed interest</a></td>
<td class="nump">$ 1<span></span>
</td>
<td class="nump">$ 2<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AmortizationOfLeasedAsset">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The expense charged against earnings for the periodic recognition of capitalized leases. This element may apply to energy companies that lease mineral producing properties and to other enterprises that capitalize property, plant, or equipment obtained through capital leases.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 3<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45031-112735<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AmortizationOfLeasedAsset</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 35<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=77915053&amp;loc=d3e43161-112731<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.8)<br> -URI http://asc.fasb.org/extlink&amp;oid=116634182&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LeasesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LeasesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeasePayments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 5<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=77888419&amp;loc=SL77918643-209977<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (g)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=77888426&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeasePayments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
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							}</script>
</head>
<body>
<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6607936768">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Other Assets - Other Assets (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract', window );"><strong>Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentNet', window );">Furniture and fixtures, net of accumulated depreciation</a></td>
<td class="nump">$ 33<span></span>
</td>
<td class="nump">$ 36<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment', window );">Lik project equipment, net of accumulated depreciation</a></td>
<td class="nump">60<span></span>
</td>
<td class="nump">70<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AccruedReclamationCostsCurrent', window );">Exploration bonds and other assets</a></td>
<td class="nump">4<span></span>
</td>
<td class="nump">4<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CapitalLeasedAssetsGross', window );">Office lease asset</a></td>
<td class="nump">64<span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_OtherAssets', window );">Total other assets</a></td>
<td class="nump">$ 161<span></span>
</td>
<td class="nump">$ 110<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedReclamationCostsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Current portion of reclamation reserve to restore a mining or drilling site to the condition agreed upon within the mining or drilling contract.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI http://asc.fasb.org/extlink&amp;oid=118951113&amp;loc=d3e6911-107765<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedReclamationCostsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI http://asc.fasb.org/extlink&amp;oid=116869197&amp;loc=d3e4845-128472<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CapitalLeasedAssetsGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 840<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=84164758&amp;loc=d3e45014-112735<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CapitalLeasedAssetsGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(17))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(10))<br> -URI http://asc.fasb.org/extlink&amp;oid=6876686&amp;loc=d3e534808-122878<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(10))<br> -URI http://asc.fasb.org/extlink&amp;oid=119400593&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(14))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(8))<br> -URI http://asc.fasb.org/extlink&amp;oid=119400593&amp;loc=d3e572229-122910<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(13))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6756285216">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Fair Value - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Marketable equity securities</a></td>
<td class="nump">$ 1,196<span></span>
</td>
<td class="nump">$ 1,585<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member', window );">Level 1</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Short-term investments</a></td>
<td class="nump">8,714<span></span>
</td>
<td class="nump">10,223<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Marketable equity securities</a></td>
<td class="nump">1,196<span></span>
</td>
<td class="nump">1,585<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member', window );">Level 2</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Short-term investments</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Marketable equity securities</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member', window );">Level 3</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AssetsFairValueDisclosureAbstract', window );"><strong>Assets</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure', window );">Short-term investments</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_InvestmentsFairValueDisclosure', window );">Marketable equity securities</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
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<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsFairValueDisclosureAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsFairValueDisclosureAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>xbrli:stringItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentsFairValueDisclosure">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=117815213&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentsFairValueDisclosure</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td></td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
<td></td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6746226960">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Commitments and Contingencies (Details Narrative)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">3 Months Ended</th>
</tr>
<tr><th class="th">
<div>Sep. 30, 2018 </div>
<div>USD ($)</div>
</th></tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingenciesDisclosureAbstract', window );"><strong>Commitments and Contingencies Disclosure [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingLiabilities', window );">Agreement to fund drilling program at Florida Canyon payable in three installments of $527,000, $527,000, and $526,000</a></td>
<td class="nump">$ 1,580<span></span>
</td>
</tr>
</table>
<div style="display: none;">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommitmentsAndContingenciesDisclosureAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
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</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOperatingLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of liabilities that result from activities that generate operating income.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI http://asc.fasb.org/extlink&amp;oid=118932676&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOperatingLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td>debit</td>
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<td>duration</td>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>46
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6756892192">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Employee Stock Compensation Plans (Details Narrative) - USD ($)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
<th class="th"><div>Dec. 31, 2018</div></th>
<th class="th"><div>Sep. 01, 2017</div></th>
<th class="th"><div>Jun. 08, 2013</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract', window );"><strong>Share-based Payment Arrangement [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized', window );">Total shares available for awards in 2013 Plan, as amended</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5,750,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber', window );">Outstanding options exercisable with option prices between $0.28 and $0.77 per share</a></td>
<td class="nump">4,373,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4,373,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5,223,160<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross', window );">Options granted at $0.28 per shareand $0.62 per share</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">150,000<span></span>
</td>
<td class="nump">100,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue', window );">Grant date fair value options granted</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 23<span></span>
</td>
<td class="nump">$ 12<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod', window );">Options expired with exercise prices between $1.68 and $0.70 per share</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,000,160<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpense', window );">Stock option compensation expense recorded</a></td>
<td class="nump">$ 85<span></span>
</td>
<td class="nump">$ 432<span></span>
</td>
<td class="nump">$ 173<span></span>
</td>
<td class="nump">$ 442<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber', window );">Conditional options granted with exercise price of $0.77 per share, with grant date fair value of $970,000</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,300,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested', window );">Unrecognized stock option compensation cost related to non-vested options</a></td>
<td class="nump">$ 487<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 487<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllocatedShareBasedCompensationExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5047-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 14.F)<br> -URI http://asc.fasb.org/extlink&amp;oid=115993241&amp;loc=d3e301413-122809<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (h)(1)(i)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllocatedShareBasedCompensationExpense</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>xbrli:stringItemType</td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares authorized for issuance under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iii)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(3)-(4)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) granted during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (d)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>num:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(1)<br> -URI http://asc.fasb.org/extlink&amp;oid=116856206&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6756651744">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Shareholders' Equity - Shareholders' Equity (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">6 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Jun. 30, 2019</div></th>
<th class="th"><div>Jun. 30, 2018</div></th>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember', window );">Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Beginning balance, value</a></td>
<td class="nump">$ 582<span></span>
</td>
<td class="nump">$ 584<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharesIssued', window );">Beginning balance, shares</a></td>
<td class="nump">58,171,466<span></span>
</td>
<td class="nump">58,434,566<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue', window );">Purchase of shares for cancellation, value</a></td>
<td class="num">$ (1)<span></span>
</td>
<td class="num">$ (1)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares', window );">Purchase of shares for cancellation, shares</a></td>
<td class="num">(33,200)<span></span>
</td>
<td class="num">(145,200)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Ending balance, value</a></td>
<td class="nump">$ 581<span></span>
</td>
<td class="nump">$ 583<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_SharesIssued', window );">Ending balance, shares</a></td>
<td class="nump">58,138,266<span></span>
</td>
<td class="nump">58,289,366<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_AdditionalPaidInCapitalMember', window );">Additional Paid-In Capital</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Beginning balance, value</a></td>
<td class="nump">$ 69,873<span></span>
</td>
<td class="nump">$ 69,312<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition', window );">Stock option expense</a></td>
<td class="nump">173<span></span>
</td>
<td class="nump">442<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue', window );">Purchase of shares for cancellation, value</a></td>
<td class="num">(10)<span></span>
</td>
<td class="num">(64)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Ending balance, value</a></td>
<td class="nump">70,036<span></span>
</td>
<td class="nump">69,690<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_RetainedEarningsMember', window );">Retained Earnings / Accumulated Deficit</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Beginning balance, value</a></td>
<td class="num">(43,365)<span></span>
</td>
<td class="num">(39,767)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">(1,443)<span></span>
</td>
<td class="num">(1,617)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Ending balance, value</a></td>
<td class="num">(44,808)<span></span>
</td>
<td class="num">(41,384)<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=XPL_TotalShareholderEquityMember', window );">Total Shareholders' Equity</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Beginning balance, value</a></td>
<td class="nump">27,090<span></span>
</td>
<td class="nump">30,129<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition', window );">Stock option expense</a></td>
<td class="nump">173<span></span>
</td>
<td class="nump">442<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue', window );">Purchase of shares for cancellation, value</a></td>
<td class="num">(11)<span></span>
</td>
<td class="num">(65)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">(1,443)<span></span>
</td>
<td class="num">(1,617)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Ending balance, value</a></td>
<td class="nump">$ 25,809<span></span>
</td>
<td class="nump">$ 28,889<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount of increase to additional paid-in capital (APIC) for recognition of cost for option under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition</td>
</tr>
<tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
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<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td style="white-space:nowrap;">us-gaap_SharesIssued</td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares that have been repurchased and retired during the period.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<span style="display: none;">v3.19.2</span><table class="report" border="0" cellspacing="2" id="idp6745587552">
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<th class="th" colspan="2">3 Months Ended</th>
<th class="th" colspan="2">6 Months Ended</th>
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<th class="th"><div>Jun. 30, 2019</div></th>
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<td class="text">&#160;<span></span>
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</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_StockRepurchasedAndRetiredDuringPeriodValue2', window );">Aggregate purchase price</a></td>
<td class="nump">$ 2<span></span>
</td>
<td class="nump">$ 39<span></span>
</td>
<td class="nump">$ 11<span></span>
</td>
<td class="nump">$ 65<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_StockRepurchaseTotalSharesRepurchased', window );">Total of shares repurchased</a></td>
<td class="nump">964,100<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">964,100<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_XPL_TotalAggregatePriceStockRepurchased', window );">Aggregate total repurchase price</a></td>
<td class="nump">$ 4,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 4,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_StockRepurchaseTotalSharesRepurchased">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total aggregate shares repurchased stock</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_StockRepurchaseTotalSharesRepurchased</td>
</tr>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
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</tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_XPL_StockRepurchasedAndRetiredDuringPeriodValue2">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Stock repurchased and retired during period</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Total aggregate price repurchased stock</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">XPL_TotalAggregatePriceStockRepurchased</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EquityAbstract</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockRepurchasedDuringPeriodShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI http://asc.fasb.org/extlink&amp;oid=109259400&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI http://asc.fasb.org/extlink&amp;oid=27012166&amp;loc=d3e187085-122770<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
