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Mineral Property

3 Months Ended

Mar. 31, 2016

Property, Plant and Equipment [Abstract]

Mineral Property

2.        Mineral Property

The following table details Solitario’s investment in Mineral Property:

(in thousands)	March 31,	December 31,
	2016	2015
Exploration
La Promesa (Peru)	$ 5	$ 5
Norcan (Mexico)	6	6
Aconchi (Mexico)	5	5
Canta Colorado (Peru)	3	3
Total exploration mineral property	$19	$19

All exploration costs on our other 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.

Mt. Hamilton

On February 22, 2012, Solitario earned an 80% interest in MH-LLC as a result of the completion of a feasibility study on the Mt. Hamilton project (the “Feasibility Study”) prepared by SRK Consulting (US), Inc. of Lakewood, Colorado (“SRK”). In October 2014, SRK, on behalf of Solitario completed an updated feasibility study on the Mt. Hamilton project. Solitario sold its interest in the Mt. Hamilton project on August 25, 2015 through the Transaction.

Capitalized costs

Solitario began capitalizing its development costs incurred at its Mt. Hamilton project subsequent to the completion of the Feasibility Study. Capitalization of costs for the three months ended March 31, 2015, prior to the Transaction, is detailed in the following table

(in thousands)	Three months ended March 31,
	2015
Development expenditures	$156
Capitalized interest	169
Capitalized depreciation	2
Total capitalized costs	$ 327

Discontinued projects

Solitario did not record any mineral property write-downs during the three months ended March 31, 2016 or 2015.

Exploration expense

The following items comprised exploration expense:

(in thousands)	Three months ended  March 31,
	2016	2015
Geologic and field expenses	$76	$18
Administrative	46	7
Total exploration costs	$ 122	$ 25

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- References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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