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SHARE CAPITAL AND SHARE-BASED PAYMENTS (Details Narrative) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jan. 01, 2016
Disclosure of continuing involvement in derecognised financial assets [line items]        
Common shares issued for cash, exercise of stock options, shares 20,000 1,079,000    
Common shares issued for cash, exercise of stock options, amount $ 24,836 $ 948,690 $ 733,412  
Common shares issued units   7,124,430    
Common shares issued per unit   $ 1.57    
Common shares issued upon the vesting of restricted share units 257,152      
Proceeds from issuance of common stock   $ 11,185,355    
Exercise price of warrants   $ 2.00    
Warrant expiry date   Nov. 28, 2019    
Bought-deal financing, amount   $ 50,000,000    
Warrants issued during the period $ 1,637,887    
Cash commission, percent   7.00%    
Groos proceeds on cash commission   $ 782,875    
Legal and regulatory costs   $ 335,134    
Weighted average remaining contractual life of stock options outstanding 3 years 3 months 26 days 3 years 2 months 16 days 2 years 4 months 17 days  
Share-based payments $ 1,177,156 $ 875,399 $ 31,926  
Capitalized to exploration and evaluation assets 43,337,870 30,791,736 29,896,658 $ 29,896,658
Stock options [Member]        
Disclosure of continuing involvement in derecognised financial assets [line items]        
Capitalized to exploration and evaluation assets $ 127,222 $ 95,684  
Stock option grant percent 10.00%      
Stock option plan, description The stock option plan provides for the granting of stock options to directors, officers, and employees (up to a limit of 5% per individual), and to persons providing investor relations or consulting services (up to a limit of 2% per individual), the limits being based on the Company’s total number of issued and outstanding shares per year.      
Weighted average fair value at grant date $ 1.14 $ 1.60 $ 0.65  
Market offering under prospectus supplements [Member]        
Disclosure of continuing involvement in derecognised financial assets [line items]        
Common shares issued 10,000   1,001,196  
Average price $ 1.67   $ 1.21  
Common shares issued for cash, exercise of stock options, shares     922,000  
Common shares issued for cash, exercise of stock options, amount     $ 733,412  
Common shares issued units   6,119,562    
Common shares issued per unit   $ 1.85    
Proceeds from issuance of common stock $ 16,737 $ 11,315,633 1,213,120  
Market offering under prospectus supplements, amount   $ 15,000,000 $ 6,000,000  
Cash commission, percent   3.00% 3.00%  
Groos proceeds on cash commission 605 $ 339,074 $ 36,394  
Legal and regulatory costs   $ 63,687 45,959  
Public offering issued under a separate prospectus supplements [Member]        
Disclosure of continuing involvement in derecognised financial assets [line items]        
Common shares issued units   800,000    
Common shares issued per unit   $ 1.00    
Proceeds from issuance of common stock   $ 800,000    
Exercise price of warrants   $ 1.00    
Public offering issued under separate prospectus supplements, amount   $ 800,000    
Warrants issued during the period   $ 40,000    
Cash commission, percent   7.00%    
Groos proceeds on cash commission   $ 56,000    
Legal and regulatory costs   22,509    
Restricted Share Units [Member]        
Disclosure of continuing involvement in derecognised financial assets [line items]        
Share-based payments 841,207 343,304  
Capitalized to exploration and evaluation assets $ 116,984 $ 34,641  
Restricted share units outstanding 592,172 787,500  
Restricted share granted 80,500 790,000  
Weighted average fair value at grant date $ 1.98 $ 2.95  
Restricted stock unit issuance 60 83,060