    <SEC-DOCUMENT>0001140361-21-011287-index.html : 20210401
    <SEC-HEADER>0001140361-21-011287.hdr.sgml : 20210401
    <ACCEPTANCE-DATETIME>20210401172924
    ACCESSION NUMBER:		0001140361-21-011287
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210401
    DATE AS OF CHANGE:		20210401

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MINERALS TECHNOLOGIES INC
    		CENTRAL INDEX KEY:			0000891014
    		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INORGANIC CHEMICALS [2810]
    		IRS NUMBER:				251190717
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-11430
    		FILM NUMBER:		21799467

    	BUSINESS ADDRESS:
    		STREET 1:		622 THIRD AVENUE
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10017-6707
    		BUSINESS PHONE:		212-878-1800

    	MAIL ADDRESS:
    		STREET 1:		622 THIRD AVENUE
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10017-6707
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>nc10021431x4_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: nc10021431x4_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>nc10021431x4_nc1.jpg
    <TEXT>
    Document 2 - file: nc10021431x4_nc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>nc10021431x4_nc2.jpg
    <TEXT>
    Document 3 - file: nc10021431x4_nc2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>