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Share Capital, Warrants and Options (Details Narrative)
 12 Months Ended
Aug. 31, 2020
CAD ($)
$ / shares
shares
Aug. 13, 2020
CAD ($)
$ / shares
shares
Dec. 18, 2019
CAD ($)
$ / shares
shares
Dec. 09, 2019
CAD ($)
shares
Oct. 04, 2019
$ / shares
shares
Apr. 19, 2018
CAD ($)
$ / shares
shares
Dec. 31, 2020
CAD ($)
Option
Int
$ / shares
shares
Dec. 31, 2019
CAD ($)
Option
shares
Dec. 31, 2018
CAD ($)
shares
Option
$ / shares
Issue of Equity [Line items]                  
Par value per share | $ / shares         $ 1        
Common stock, share issued | shares         10   109,833,648 88,690,791 78,792,860
Common stock, shares outstanding | shares         10   109,833,648 88,690,791 78,792,860
Description for adjusted of common stock         10-for-1 share        
Expected dividend yield             0.00% 0.00%
Risk-free interest rate                
Expected volatility                
Eligible exploration expenditures             $ 39,103,000 $ 38,633,000  
Trade payables             7,500    
Transfer to deficit for expired options and warrants             3,782,706 3,860,656 $ 229,381
Expense from share-based payment transactions on grant of options             $ 969,391 $ 317,332
Stock Option Plan [Member]                  
Issue of Equity [Line items]                  
Period of options granted             5 years    
Number of stock option granted | Option             7,850,000    
Stock options exercisable price per share | $ / shares             $ 0.16    
Stock Option Plan [Member] | Options One [Member]                  
Issue of Equity [Line items]                  
Stock options exercisable price per share | $ / shares             $ 0.16    
Number of stock option exercised | Option             6,650,000    
Stock Option Plan [Member] | Options Two [Member]                  
Issue of Equity [Line items]                  
Stock options exercisable price per share | $ / shares             $ 0.09    
Number of stock option exercised | Option             1,200,000    
Incentive Stock Options [Member] | Employees, Directors and Consultants [Member]                  
Issue of Equity [Line items]                  
Period of options granted                 5 years
Number of stock option granted | shares                 642,500
Stock options exercisable price per share | $ / shares                 $ 1.20
Fair value of options                 $ 317,332
Warrants [Member]                  
Issue of Equity [Line items]                  
Exercise price of warrant | $ / shares             $ 0.12    
Post-consolidation Basis [Member] | Stock Option Plan [Member]                  
Issue of Equity [Line items]                  
Number of stock option granted | Option             7,850,000 642,500
Maximum [Member]                  
Issue of Equity [Line items]                  
Risk-free interest rate             1.21%   2.17%
Expected volatility             125.00%   101.00%
Percentage of beneficially owns, issued and outstanding             10.00%    
Period of options granted             10 years    
Minimum [member]                  
Issue of Equity [Line items]                  
Risk-free interest rate             0.39%   2.04%
Expected volatility             121.50%   96.90%
Non Brokered Private Placement [Member]                  
Issue of Equity [Line items]                  
Warrant description Each warrant will entitle the holder to acquire one common share of the Company at an exercise price of $0.09 for a period of 24 months from its date of issuance. The warrants are subject to an acceleration clause such that if the closing market price of the common shares on the TSX-V is greater than $0.12 per common share for a period of 10 consecutive trading days at any time after the four-month anniversary of the closing of the placement, the Company may, at its option, accelerate the warrant expiry date to within 30 days.                
Share issuance costs in cash $ 124,222                
Finder's fee paid in common share purchase warrant | shares 588,154                
Exercise price of warrant | $ / shares $ 0.09                
Fair value of warrants issued $ 716,055                
Expected life 2 years                
Expected dividend yield 0.00%                
Non Brokered Private Placement [Member] | Agent's Warrants [Member]                  
Issue of Equity [Line items]                  
Fair value of warrants issued $ 18,547                
Non Brokered Private Placement [Member] | Warrants [Member]                  
Issue of Equity [Line items]                  
Expected life           2 years      
Expected dividend yield           0.00%      
Risk-free interest rate           1.91%      
Expected volatility           94.26%      
Non Brokered Private Placement [Member] | Maximum [Member]                  
Issue of Equity [Line items]                  
Risk-free interest rate 0.28%                
Expected volatility 158.00%                
Non Brokered Private Placement [Member] | Minimum [member]                  
Issue of Equity [Line items]                  
Risk-free interest rate 0.31%                
Expected volatility 158.53%                
Non Brokered Private Placement [Member] | First Tranche [Member]                  
Issue of Equity [Line items]                  
Number of units issued | shares   15,481,077              
Price of unit issued | $ / shares   $ 0.07              
Total gross proceeds   $ 1,083,675              
Non Brokered Private Placement [Member] | Second And Final Tranche [Member]                  
Issue of Equity [Line items]                  
Number of units issued | shares 5,661,780                
Price of unit issued | $ / shares $ 0.07                
Total gross proceeds $ 396,325                
Series 1 Convertible Preferred Shares [Member]                  
Issue of Equity [Line items]                  
Authorized capital | shares             100,000,000    
Par value per share | $ / shares                
Common Stock [Member]                  
Issue of Equity [Line items]                  
Share capital             $ 89,627,000 $ 89,006,000  
Common Stock [Member] | Post-consolidation Basis [Member]                  
Issue of Equity [Line items]                  
Common stock, share issued | shares       300,000          
Fair value of common shares issued       $ 51,000          
Common Stock [Member] | Non Brokered Private Placement [Member]                  
Issue of Equity [Line items]                  
Number of units issued | shares     7,373,265     23,333,333      
Price of unit issued | $ / shares     $ 0.18     $ 0.75      
Total gross proceeds           $ 17,500,000      
Share issuance costs in cash     $ 343,639           $ 578,800
Finder's fee paid in common share purchase warrant | shares           1      
Exercise price of warrant | $ / shares     $ 0.25     $ 1.20      
Fair value of warrants issued     $ 265,217     $ 2,571,514      
Number of flow-through common shares | shares     2,224,666            
Flow-through common shares price | $ / shares     $ 0.18            
Number of common shares in unit | shares     1            
Flow-through share premium paid     $ 88,987            
Share capital     311,453            
Eligible exploration expenditures             $ 400,440  
Trade payables                 $ 250,000
Common Stock [Member] | Non Brokered Private Placement [Member] | Agent's Warrants [Member]                  
Issue of Equity [Line items]                  
Fair value of warrants issued     $ 21,445            
Common Stock [Member] | Non Brokered Private Placement [Member] | Warrants [Member]                  
Issue of Equity [Line items]                  
Expected life     2 years            
Expected dividend yield     0.00%            
Risk-free interest rate     1.73%            
Expected volatility     147.26%            
Series 1 Preferred Shares [Member]                  
Issue of Equity [Line items]                  
Common stock, shares outstanding | shares             590,931 590,931 590,931
Preferred Stock [Member]                  
Issue of Equity [Line items]                  
Share capital             $ 591,000 $ 591,000  
Conversion value of share | $ / shares             $ 1    
Factor by which number of shares on conversion is calculated | $ / shares             $ 9.00    
Number of votes per share at meeting of holders of preference shares | Int             1    
Period from date of issuance when shares become convertible             6 months    
Period of notice to convert shares             10 days