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Share Purchase Warrants (Tables)
6 Months Ended
Sep. 30, 2021
Share Purchase Warrants [Abstract]  
Schedule of share purchase warrants
   Number of
warrants
   Weighted average exercise price
$
 
         
Balance, March 31, 2020   3,300,000    2.50 
           
Expired   (3,300,000)   2.50 
           
Balance, March 31, 2021 and September 30, 2021