AMENDMENT
                                       TO
                               PURCHASE AGREEMENT

     This Amendment to the Purchase  Agreement is made effective this 6th day of
December,  1996, between Chaparral  Resources,  Inc.  ("Chaparral") and Guntekin
Koksal ("Shareholder").

     WHEREAS,  Chaparral  and  Shareholder  entered into the Purchase  Agreement
("Agreement")  dated  January 12, 1996 for the  purchase by Chaparral of certain
shares of Central Asian Petroleum  (Guernsey)  Limited ["CAP(G)"] stock owned by
Shareholder;

     WHEREAS,  Chaparral and  Shareholder  desire to amend the first sentence of
Section 1.c. of the Agreement;

     NOW, THEREFORE,  Chaparral and Shareholder agree that the first sentence of
Section  1.c. of the  Agreement  is deleted in its  entirety and replaced by the
following revised first sentence for Section 1.c.:

     1.c. Following the Closing A, Chaparral paid to Shareholder  $306,250
     on June 11, 1996 and $175,000 on September  11, 1996. On December 11,
     1996  Chaparral  shall pay the  balance  of the  September  11,  1996
     payment of  $131,250  and  $68,750  of the  $306,250  payment  due to
     Shareholder.  The balance of the December payment of $237,500 will be
     paid to Shareholder on the fifth business day following completion of
     interim  financing by Chaparral,  if so directed by Chaparral's Board
     of Directors, but in any event no later than March 11, 1997. On March
     11, 1997,  Chaparral shall pay Shareholder the regular installment of
     $306,250 due on that date and  additionally,  the payment of $237,500
     (should said payment  still be  outstanding  as of that date);  (each
     such payment referred to here as "Installment Payment").

     This  Amendment may be executed in one or more  counterparts  each or which
shall be deemed an original,  but all of which together shall constitute one and
the same  instrument;  and shall only be binding upon the full  execution by the
parties.

     IN WITNESS WHEREOF,  the parties have executed this Amendment as of the day
and year first set forth above.

CHAPARRAL RESOURCES, INC.


/s/Paul V. Hoovler
- ------------------------------------
Paul V. Hoovler, President

SHAREHOLDER


/s/Guntekin Koksal
- ------------------------------------
Guntekin Koksal