COMMON STOCK                                          COMMON STOCK
PAR VALUE $0.10	                             						  PAR VALUE $0.10
THIS CERTIFICATE IS TRANSFERABLE
   IN BOSTON, MASSACHUSETTS
                                                          SHARES
                        
                                                     CUSIP 603158 10 6
                                                See reverse for certain
                                                       definitions


                     MINERALS TECHNOLOGIES INC.

       INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

This certifies that



is the owner of

       FULLY-PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK OF
Minerals Technologies Inc., transferable on the books of the Corporation by
the holder hereof in person or by duly authorized Attorney upon surrender
of this Certificate properly endorsed.  This Certificate is not valid
unless countersigned and registered by the Transfer Agent and Registrar.
Witness the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

DATED:


Countersigned and Registered:
    STATE STREET BANK AND TRUST COMPANY         /s/ Chairman
         (BOSTON, MASSACHUSETTS)
                 Transfer Agent and Registrar   /s/ Secretary

By

                 Authorized Signature

  This certificate also evidences and entitles the holder hereof to the
same number of Rights (subject to adjustment) as the number of shares of
Common Stock represented by this certificate, such Rights being on the
terms provided under the Rights Agreement between Minerals Technologies
Inc. and Chemical Bank (the "Rights Agent"), dated as of October 26, 1992,
as it may be amended from time to time (The "Rights Agreement"), the terms
of which are incorporated herein by reference and a copy of which is on
file at the principal executive offices of Minerals Technologies Inc. 
Under certain circumstances, as set forth in the Rights Agreement, such
Rights shall be evidenced by separate certificates and shall no longer be
evidenced by this certificate.  Minerals Technologies Inc. shall mail to
the registered holder of this certificate a copy of the Rights Agreement
without charge within five days after receipt of a written request
therefor.  Under certain circumstances as provided in Section 7(e) of the
Rights Agreement, Rights issued to or Beneficially Owned by Acquiring
Persons or their Affiliates or Associates (as such terms are defined in the
Rights Agreement) or any subsequent holder of such Rights shall be null and
void and may not be transferred to any Person.