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11. Forward Gold Contracts: Schedule of Options Indexed to Issuer's Equity (Details) - USD ($)
9 Months Ended
Sep. 30, 2016
Sep. 30, 2017
Dec. 31, 2016
Details      
Liabilities, Fair Value Disclosure, Recurring $ 1,707,089 $ 1,101,897 $ 1,386,228
Proceeds from contracts 70,087    
Payments on forward gold contracts in cash   (270,755)  
Payments in gold purchased by the Company   (232,037)  
Change in fair value of forward gold contracts 466,783 218,461  
Liabilities, Fair Value Disclosure, Recurring 1,707,089 1,101,897 1,386,228
Forward gold contracts, current portion 887,943 649,411 845,198
Forward gold contracts, long term $ 819,146 $ 452,486 $ 541,030