PLAYA MINERALS & ENERGY. INC.
                        INCENTIVE STOCK OPTION AGREEMENT

         PLAYA  MINERALS & ENERGY,  INC., a Texas  corporation  (the  "COMPANY")
hereby grants to _______________ (the "OPTIONEE") an incentive stock option (the
"INCENTIVE  OPTION") to purchase a total of __________  shares (the "SHARES") of
the Company's  common stock,  par value $.01 per share,  (the "COMMON STOCK") at
the price  determined  as provided  herein,  and in all respects  subject to the
terms and conditions of the Company s 1997 Stock Option Plan (the "PLAN"), which
Plan is incorporated herein in its entirety by reference.  Capitalized terms not
otherwise  defined in this agreement (the "INCENTIVE  OPTION  AGREEMENT")  shall
have the meaning given to such terms in the Plan.

         1. NATURE OF OPTION. This Incentive Option is intended to qualify as an
Incentive Stock Option as defined in Section 422 of the Internal Revenue Code of
1986, as amended (the "Code").

         2. EXERCISE PRICE. The exercise price of this Incentive Option is $1.98
per share of Common  Stock  acquired on  exercise,  which price is not less than
100% of the Fair Market Value,  as determined in accordance  with the Plan, of a
share of Common Stock on the date of grant of this Incentive Option.

         3. TERM OF OPTION.  This Incentive Option may not be exercised prior to
6 months from the date of grant of this Incentive Option as set forth herein nor
after the  expiration  of 5 years from such date of grant;  provided,  that this
Incentive  Option may be exercised  during such term only in accordance with the
terms and conditions of the Plan and this Incentive  Option  Agreement,  subject
specifically  to Section 6 of the Plan and  Section 4 of this  Incentive  Option
Agreement.  However,  if the  Optionee  is not an employee of the Company at the
time of grant, such Incentive Option shall expire, unless exercised,  at the end
of 5 years.

         4.  EXERCISE OF OPTION.  This  Incentive  Option  shall be  exercisable
during its term, subject to the provisions of Section 3 hereof. and Section 6 of
the Plan, as follows:

                  (i) Vesting.  For as long as the Optionee remains an Employee,
this Incentive grant shall vest  cumulatively as follows:  33 1/3% of the Shares
shall vest one year from the date of grant as  provided  herein,  and 33 1/3% of
the Shares  shall vest on such date each year  thereafter  until all such Shares
are vested and  exercisable  under the terms and  conditions  of this  Incentive
Option Agreement.

                  (ii) Right of Exercise.  This Incentive  Option is exercisable
at any time after six months  from the date of grant and during the term of this
Incentive  Option  Agreement,  in whole or in part, to acquire those Shares that
have  vested in  accordance  with this  Incentive  Option  Agreement;  provided,
however,  that this  Incentive  Option may only be  exercisable to acquire whole
shares of Common Stock.

                  (iii) Method of Exercise: This Incentive Option is exercisable
by delivery of this  Incentive  Option.  Agreement  and a written  notice to the
attention  of the  Secretary of the Company,  no fewer than five  business  days
prior to the  proposed  effective  date of  exercise,  signed  by the  Optionee,
specifying  the number of Shares to be acquired on, and the  effective  date of,
such  exercise.  The Optionee may withdraw  notice of exercise of this Incentive
Option at any time prior to close of business on the business day  preceding the
proposed  exercise  date,  and in this  instance,  the Company  will return this
Incentive Option Agreement to the Optionee.


                  (iv) Method of Payment.  Payment of the exercise price for the
Shares  purchased under this Incentive  Option shall be delivered,  by certified
mail to the attention of the Secretary of the Company,  on the effective date of
exercise  either (i) in cash, or by certified  check,  bank cashier's  check, or
wire transfer, or (ii) subject to the approval of the committee,  in whole or in
part in shares of Common  Stock owned by the  Optionee  and valued at their Fair
Market Value on the effective date of exercise. Such shares must be delivered to
the  Secretary,  duly  endorsed  in blank or  accompanied  by stock  powers duly
executed in blank, and any other documents that the Secretary may require.

         5. RESTRICTIONS ON EXERCISE. This Incentive Option may not be exercised
if the issuance of such Shares or the method of payment of the consideration for
such shares  would  constitute a violation  of any  applicable  federal or state
securities  or other laws or  regulations,  including any rule under Part 207 of
Title 2 of the Code of Federal  Regulations  ("Regulation  G") as promulgated by
the Federal  Reserve Board, or any rules or regulations of any stock exchange on
which the Common Stock may be listed.

         This  Incentive  Option may only be  exercised in  accordance  with the
terms and  conditions  of the Plan and this  Incentive  Option  Agreement.  If a
conflict exists between any term or provision of this Incentive Option Agreement
and a term or provision of the Plan, the applicable  terms and provisions of the
Plan shall govern and prevail.

         6.  NON-TRANSFERABILITY OF OPTION. During the lifetime of the Optionee,
this  Incentive  Option may only be exercised by the  Optionee.  This  Incentive
Option is not assignable or transferable  otherwise than by will .or by the laws
of descent and distribution.  The terms of this Incentive Option Agreement shall
be binding on the Optionee's heirs and successors and on the  administrators and
executors of the Optionee's estate.

         7. QUALIFICATION AS AN INCENTIVE STOCK OPTION. The Optionee understands
that this Incentive Option is intended to quality as an "incentive stock option"
within the meaning of Section 422 of the Code.  The  Optionee  must meet certain
holding  periods under Section  422(a) of the Code to obtain the federal  income
tax  treatment  applicable  to the exercise of Incentive  Stock  Options and the
disposition of shares acquired  thereby.  The Optionee further  understands that
the Exercise Price of the Shares  subject to this Incentive  Option has been set
by the  Option  Committee  of the  Board  of  Directors  at a prices  that  such
committee  determined  to be not less than  100% of the Fair  Market  Value,  as
determined in  accordance  with the Plan, of a share of Common Stock on the date
of grant. The Optionee further understands and agrees, however, that the company
shall not be liable or responsible for any additional tax liability  incurred by
the  Optionee  in the event that the  Internal  Revenue  Service  for any reason
determines  that this  Incentive  Option does not qualify as an Incentive  Stock
Option within the meaning of the Code.

         8. INDEPENDENT  LEGAL AND TAX ADVICE.  The Optionee has and will obtain
independent  legal and tax  advice  regarding  the grant  and  exercise  of this
Incentive Option and the disposition of any Shares acquired thereby.

         9.  AMENDMENT.  This  Incentive  Option  Agreement  may not be amended,
modified or waived  except by a written  instrument  signed by the party against
whom enforcement of any such modification, amendment or waiver is sought.


         10. GOVERNING LAW. This Incentive Option Agreement shall be governed by
and shall be construed and enforced in accordance  with the laws of the State of
Texas.

         11.      SUPERSEDES PRIOR  AGREEMENTS.  This Incentive Option Agreement
                  shall   supersede  and  replace  all  prior   agreements   and
                  understandings,  oral or written  between  the Company and the
                  Optionee  regarding the grant of this  Incentive  Option under
                  the Plan.

         IN WITNESS WHEREOF, the Company has, as. of July 15,.1997,  caused this
Incentive  Option Agreement to be executed on its behalf by its President or any
Vice  President  and  Optionee  has  hereunto set his hand as of .the same date,
which date is the date of grant of this. Incentive Option.

PLAYA MINERALS & ENERGY, INC.                   OPTIONEE



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John N. Ehrman
President