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Supplementary Disclosures of Cash Flow Information (Details) - Mining Properties and Mineral Rights [Member] - USD ($)
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Cash paid during period for:    
Interest $ 323,238 $ 589,553
Non-cash financing and investing activities:    
Common shares issued as part of a management agreement 0 151,428
Change in cash flow estimates related to asset retirement obligations charged to mineral property interests 170,863 0
Mobile equipment acquired through issuance of debt 295,126 4,377,970
Property, plant, equipment and mineral interest expenditures included in accounts payable 708,054 7,658,456
Non-cash interest cost capitalized to mineral property interests 838,888 1,585,167
Non-cash amortization of discount and interest expense 1,232,053 1,973,307
Interest payable converted to principal balance on notes Payable $ 1,963,682 $ 0