Exploration and Evaluation Assets (Tables)

12 Months Ended

Aug. 31, 2020

Disclosure Of Exploration And Evaluation Assets [Abstract]

Disclosure of detailed information about exploration and evaluation assets [Table Text Block]

		September 1,				Impairment			August 31,
		2018		Expenditures		Loss			2019
Separation Rapids Lithium Project (a)	$	11,010,950	$	511,188	$	—		$	11,522,138
East Kemptville Tin-Indium Project (b)		5,827,524		315,087		(639,034	)		5,503,577
Other (c)		35,760		3,728		—			39,488
	$	16,874,234	$	830,003	$	(639,034	)	$	17,065,203
		September 1,				Impairment			August 31,
		2019		Expenditures		Loss			2020
Separation Rapids Lithium Project (a)	$	11,522,138	$	503,191	$	—		$	12,025,329
East Kemptville Tin-Indium Project (b)		5,503,577		83,633		(5,587,210	)		—
Other (c)		39,488		18,382		—			57,870
	$	17,065,203	$	605,206	$	(5,587,210	)	$	12,083,199