Stock options (Tables)

12 Months Ended

Oct. 31, 2020

Notes to Financial Statements [Abstract]

Disclosure of number and weighted average exercise prices of share options [Table Text Block]

	Number of			Weighted average
	options			exercise price
Outstanding at November 1, 2018	6,250,000		$	0.29
Expired	(520,000	)		0.34
Outstanding at October 31, 2019	5,730,000		$	0.25
Cancelled	(2,040,000)			0.25
Expired	(1,490,000	)		0.46
Outstanding at October 31, 2020	2,200,000		$	0.10

Disclosure of number and weighted average remaining contractual life of outstanding share options [Table Text Block]

		Weighted average
Date of issue	Expiry date	Number of		Exercise price	Remaining
		options			contractual life
					(years)
June 29, 2018	June 29, 2023	2,200,000		0.10	2.7
Outstanding and exercisable at October 31, 2020		2,200,000	$	0.10	2.7