EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors Minerals Technologies Inc.:

We consent to the incorporation by reference in the registration statements (Nos. 333-160002, 33-59080, 333-62739, and 333-138245) on Form S-8 of Minerals Technologies Inc. of our reports dated February 22, 2013, with respect to the consolidated balance sheets as of December 31, 2012 and 2011, and the related consolidated statements of income, comprehensive income, shareholders' equity, and cash flows for each of the years in the three-year period ended December 31, 2012, and the related financial statement schedule and the effectiveness of internal control over financial reporting as of December 31, 2012, which reports appear in the December 31, 2012 annual report on Form 10-K of Minerals Technologies Inc.

/s/ KPMG LLP

New York, New York

February 22, 2013