Note 8 - Warrants (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Warrants or Right [Table Text Block]

	Number of warrants		Weighted average exercise price
Warrants outstanding, December 31, 2021, December 31, 2022 and March 31, 2023		17,400,000	$	0.28

Exercise price				Number of warrants outstanding		Expiry date	Number of warrants exercisable		Remaining contractual life (years)
$	1.00		(CAD)		4,900,000	April 19, 2023(2)		4,900,000		0.05
$	0.001	(1)	(USA)		12,500,000	June 4, 2025		-		2.18
					17,400,000			4,900,000