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12. Forward Gold Contracts: Schedule of Options Indexed to Issuer's Equity (Details) - USD ($)
 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Details    
Change in balance for the forward gold contracts beginning balance $ 920,579 $ 1,386,228
Conversion to note payable (492,783)  
Payments in cash (185,798) (270,755)
Payments in gold purchased by the Company (257,981) (232,037)
Change in fair value $ 15,983 218,461
Change in balance for the forward gold contracts ending balance   $ 1,101,897