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PLANT, EQUIPMENT AND MINING PROPERTIES (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Jan. 01, 2016
Dec. 31, 2015
COST        
Beginning balance $ 35,735,241 $ 23,698,844    
Additions and transfers 7,803,637 11,963,171    
Effect of movements in exchange rates 427,274 73,226    
Ending balance 43,966,152 35,735,241    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 7,996,494 5,105,612    
Additions 3,922,442 2,875,106    
Effect of movements in exchange rates 95,611 15,776    
Ending balance 12,014,547 7,996,494    
NET BOOK VALUE        
Plant, equipment and mining properties 31,951,605 27,738,747 $ 18,593,232 $ 18,593,232
Mining properties [member]        
COST        
Beginning balance 10,190,071 4,427,701    
Additions and transfers 1,370,176 5,748,689    
Effect of movements in exchange rates 121,839 13,681    
Ending balance 11,682,086 10,190,071    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 2,283,922 1,170,392    
Additions 1,686,830 1,109,914    
Effect of movements in exchange rates 27,307 3,616    
Ending balance 3,998,059 2,283,922    
NET BOOK VALUE        
Plant, equipment and mining properties 7,684,027 7,906,149   3,257,309
Office equipment, furniture, and fixtures [member]        
COST        
Beginning balance 82,730 66,651    
Additions and transfers 49,357 15,873    
Effect of movements in exchange rates 989 206    
Ending balance 133,076 82,730    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 36,394 27,220    
Additions 11,898 9,089    
Effect of movements in exchange rates 435 85    
Ending balance 48,727 36,394    
NET BOOK VALUE        
Plant, equipment and mining properties 84,349 46,336   39,431
Computer equipment [Member]        
COST        
Beginning balance 252,726 224,545    
Additions and transfers 27,072 27,487    
Effect of movements in exchange rates 3,022 694    
Ending balance 282,820 252,726    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 115,576 88,778    
Additions 26,667 26,524    
Effect of movements in exchange rates 1,382 274    
Ending balance 143,625 115,576    
NET BOOK VALUE        
Plant, equipment and mining properties 139,195 137,150   135,767
Mine machinery and transportation equipment [Member]        
COST        
Beginning balance 14,927,045 10,175,329    
Additions and transfers 1,271,265 4,720,276    
Effect of movements in exchange rates 178,478 31,440    
Ending balance 16,376,788 14,927,045    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 4,206,187 2,761,840    
Additions 1,827,225 1,435,813    
Effect of movements in exchange rates 50,292 8,534    
Ending balance 6,083,704 4,206,187    
NET BOOK VALUE        
Plant, equipment and mining properties 10,293,084 10,720,858   7,413,489
Mill machinery and processing equipment [Member]        
COST        
Beginning balance 7,638,019 7,342,421    
Additions and transfers 2,137,015 272,911    
Effect of movements in exchange rates 91,325 22,687    
Ending balance 9,866,359 7,638,019    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 846,472 618,128    
Additions 282,535 226,434    
Effect of movements in exchange rates 10,121 1,910    
Ending balance 1,139,128 846,472    
NET BOOK VALUE        
Plant, equipment and mining properties 8,727,231 6,791,547   6,724,293
Buildings [member]        
COST        
Beginning balance 2,644,650 1,462,197    
Additions and transfers 2,948,752 1,177,935    
Effect of movements in exchange rates 31,621 4,518    
Ending balance 5,625,023 2,644,650    
ACCUMULATED DEPLETION AND DEPRECIATION        
Beginning balance 507,943 439,254    
Additions 87,287 67,332    
Effect of movements in exchange rates 6,074 1,357    
Ending balance 601,304 507,943    
NET BOOK VALUE        
Plant, equipment and mining properties $ 5,023,719 $ 2,136,707   $ 1,022,943