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Warrants (Tables)
6 Months Ended
Jun. 30, 2023
Warrants and Rights Note Disclosure [Abstract]  
Summary of Warrants Outstanding to Purchase Shares
A reconciliation of the beginning and ending balance of share purchase warrants outstanding is as follows:

Number of WarrantsWeight-Average Exercise Price
Balance, December 31, 20226,352,278 $0.82 
Issued625,000 $0.17 
Expired(2,227,303)$0.67 
Balance, June 30, 20234,749,975 $0.79 
Summary of Warrants Outstanding And Exercisable
As of June 30, 2023, the Company had the following warrants outstanding:

Warrants OutstandingExercise PriceExpiration Date
2,999,975 $1.00 April 13, 2024
625,000 *C$0.80 October 6, 2024
500,000 *C$0.80 October 6, 2025
625,000 C$0.23 May 10, 2027
4,749,975 

*Represents warrants that were exercisable as of June 30, 2023.