EXHIBIT 10.2


                        MINERAL OPTION AMENDING AGREEMENT

THIS AGREEMENT is dated as of the 3rd day of February, 2003


BETWEEN:
               Spirit Energy Corp (formerly Whitegold Natural Resource Corp.),
               --------------------------------------------------------------
               of Suite 612, 475 Howe Street, Vancouver,
               British Columbia, V6C 2B3

               (the "Optionor")

                                                               OF THE FIRST PART

AND:

               Big Cat Mining Corporation,
               ---------------------------
               of 7928 Rowland Road, Edmonton, Alberta, T6A 3W1

               (the "Optionee")
                                                              OF THE SECOND PART


WHEREAS:

     A. The Optionor and the Optionee are parties to an option  agreement  dated
September 28, 2001 (the "Option Agreement");

     B.  The  Optionor  and the  Optionee  wish to  amend  certain  terms of the
exercise of the option.

NOW THEREFORE THIS AGREEMENT WITNESSES THAT in consideration of the sum of
$1,000.00 paid by the Optionee to the Optionor (the receipt and sufficiency of
which is acknowledged) the parties mutually covenant and agree as follows:

1.   AMENDMENT OF OPTION AGREEMENT

1.1  Paragraph 4(b) of the Option Agreement is amended to read as follows:

          "(b) The Option shall be fully  exercised  by the  Optionee  incurring
               Exploration   Expenditures  of  $3,500,000  on  the  Property  as
               follows:

               (A)  $50,000 on or before March 1, 2004;

               (B)  a further $100,000 on or before December 31, 2004;

               (C)  a further $350,000 on or before December 31, 2005;

               (D)  a further $1,000,000 on of before December 31, 2006; and

               (E)  a further $2,000,000 on or before December 31, 2007.

          In the event that the Optionee  spends,  in any of the above  periods,
          less than the  specified  sum, it may pay the Optionor the  difference
          between the amount it actually  spent and the specified sum before the
          expiry  of  that  period  in  full  satisfaction  of the  expenditures
          specified.  In the event that the Optionee spends, in any period, more
          than the  specified  sum,  the  excess  shall be carried  forward  and
          applied to the expenditures to be made in succeeding periods."

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                                        2

1.2  Schedule "A" is amended to read as follows:


     Tenure No.     Claim Name     Expiry Date      Units      Tag No.
     ----------     ----------     ------------     -----     --------
     334360         ISK 1          2005/12/15        20       227242
     ----------     ----------     ------------     -----     --------
     334361         ISK 2          2005/12/15        20       227224
     ----------     ----------     ------------     -----     --------
     334362         ISK 3          2005/12/15        20       227243
     ----------     ----------     ------------     -----     --------
     334362         ISK 4          2005/12/15        18       227245
     ----------     ----------     ------------     -----     --------
     342825         ISK 5          2005/03/03        16       227213
     ----------     ----------     ------------     -----     --------
     343826         ISK 6          2005/03/03        16       227224
     ----------     ----------     ------------     -----     --------
     349262         Grizzly        2002/08/10         5       228114
     ----------     ----------     ------------     -----     --------
     349836         BRIL 1         2005/08/15         1       669160M
     ----------     ----------     ------------     -----     --------
     349837         BRIL 2         2005/08/15         1       669161M
     ----------     ----------     ------------     -----     --------
     349838         BRIL 3         2005/08/15         1       669162M
     ----------     ----------     ------------     -----     --------
     349839         BRIL 4         2005/08/16         1       669163M
     ----------     ----------     ------------     -----     --------
     349840         BRYS 1         2005/08/16         1       669164M
     ----------     ----------     ------------     -----     --------
     349841         BRYS 2         2005/08/16         1       669165M
     ----------     ----------     ------------     -----     --------
     349842         BRYS 3         2005/08/16         1       669200M
     ----------     ----------     ------------     -----     --------

1.3  Other  than as amended  by this  Mineral  Option  Amending  Agreement,  all
     provisions,  terms and  conditions of the Option  Agreement  remain in full
     force and effect.


2.   MISCELLANEOUS
------------------

2.1  Notices.
     -------
     Any notice  required or permitted to be given under this Agreement shall be
     in  writing  and  may be  given  by  delivering  same  or  mailing  same by
     registered  mail or sending  same by  telegram,  telex,  facsimile or other
     similar form of communication to the following addresses:

         The Optionor:              Spirit Energy Corp.
                                    Suite 612, 475 Hoe Street
                                    Vancouver, British Columbia
                                    V6C 2B3

                                    Facsimile:  (604)688-2015

         The Optionee:              Big Cat Mining Corporation
                                    7928 Rowland Road
                                    Edmonton, Alberta
                                    T6A 3W1

                                    Facsimile No. (250)868-8493

Any notice so given shall:

         (a)      if delivered, be deemed to have been given at the time of
                  delivery;

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                                        3


         (b)      if mailed by registered mail, be deemed to have been given on
                  the fourth business day after and excluding the day on which
                  it was so mailed, but should there be, at the time of mailing
                  or between the time of mailing and the deemed receipt of the
                  notice, a mail strike, slowdown or other labour dispute which
                  might affect the delivery of such notice by the mails, then
                  such notice shall be only effective if actually delivered; and

         (c)      if sent by telegraph, telex, facsimile or other similar form
                  of communication, be deemed to have been given or made on the
                  first business day following the day on which it was sent.

Any party may give written notice of a change of address in the aforesaid
manner, in which event such notice shall thereafter be given to such party as
above provided at such changed address.

2.2  Amendments.
     -----------
     Neither this  Agreement  nor any provision  hereof may be amended,  waived,
     discharged  or  terminated  orally,  but only by an  instrument  in writing
     signed by the party  against whom  enforcement  of the  amendment,  waiver,
     discharge or termination is sought.

2.3  Entire  Agreement.
     ------------------
     This Agreement embodies the entire agreement and understanding  between the
     parties  hereto  and  supersedes  all prior  agreements  and  undertakings,
     whether oral or written, pertaining to the subject matter hereof.

2.4  Action on Business Day.
     -----------------------
     If the date upon which any act or payment  hereunder is required to be done
     or made  falls  on a day  which is not a  business  day,  then  such act or
     payment  shall  be  performed  or  made  on the  first  business  day  next
     following.

2.5  No Merger of Judgment.
     ----------------------
     The  taking  of a  judgment  on any  covenant  contained  herein  or on any
     covenant set forth in any other  security  for payment of any  indebtedness
     hereunder  or  performance  of the  obligations  hereby  secured  shall not
     operate as a merger of any such covenant or affect the Optionee's  right to
     interest  at the rate and times  provided  in this  Agreement  on any money
     owing to the Optionee  under any  covenant  herein or therein set forth and
     such judgment  shall  provide that interest  thereon shall be calculated at
     the same rate and in the same manner as herein provided until such judgment
     is fully paid and satisfied.

2.6  Severability.
     -------------
     If any one or more of the provisions of this  Agreement  should be invalid,
     illegal or unenforceable in any respect in any jurisdiction,  the validity,
     legality  or  enforceability  of  such  provision  shall  not in any way be
     affected or impaired  thereby in any other  jurisdiction  and the validity,
     legality and  enforceability of the remaining  provisions  contained herein
     shall not in any way be affected or impaired thereby.

2.7  Legal Fees.
     -----------
     Notwithstanding  anything in the Option  Agreement  to the  contrary,  each
     party shall be responsible for the payment of its own legal fees.

2.8  Successors and Assigns.
     -----------------------
     This  Agreement  shall  enure to the  benefit  of and be  binding  upon all
     parties hereto and their respective successors and assigns, as the case may
     be.

2.9  Governing  Law.
     ---------------
     This Agreement shall be governed by and be construed in accordance with the
     laws of the Province of British  Columbia  and the parties  hereto agree to
     submit  to the  jurisdiction  of the  courts  of the  Province  of  British
     Columbia with respect to any legal proceedings arising herefrom.

2.10 Time.
     -----
     Time is of the essence of this Agreement.


2.11 Headings.
     ---------
     The  headings  of  the  paragraphs  of  this  Agreement  are  inserted  for
     convenience only and do not define, limit, enlarge or alter the meanings of
     any paragraph or clause herein.

<PAGE>

                                        4

2.12.Currency.
     ---------
     All dollar amounts expressed herein refer to lawful currency of Canada.



IN WITNESS WHEREOF the parties hereto have caused this Agreement to be duly
executed and delivered as of the day and year first written above.


Spirit Energy Corp.

Per:
         /s/ Allan Achilles
         ------------------
         Allan Achilles



Big Cat Mining Corporation

Per:
         /s/Phil Mudge
         ------------------
         Phil Mudge