Consolidated Statements of Operations and Comprehensive Loss - USD ($)	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
COSTS AND EXPENSES
Mineral property expenditures	$ 4,582,403	$ 4,487,537	$ 4,552,151
General and administrative	9,441,898	10,142,035	11,407,206
Depreciation, amortization and accretion	310,222	347,441	354,624
LOSS FROM OPERATIONS	(14,334,523)	(14,977,013)	(16,313,981)
OTHER INCOME (EXPENSES)
Interest income	181,520	433,031	227,534
Interest expenses and finance costs	(3,460,970)	(3,249,881)	(2,952,202)
Income (loss) from equity-accounted investment	2,967,583	(1,103,356)	423,657
Other income	27,980	134,545	82,543
Gain (loss) on disposition of assets	2,343	1,595,513	(1,696)
OTHER EXPENSES	(281,544)	(2,190,148)	(2,220,164)
LOSS BEFORE INCOME TAXES	(14,616,067)	(17,167,161)	(18,534,145)
DEFERRED TAX BENEFITS	5,551	14,372	707,511
NET LOSS FOR THE YEAR	(14,610,516)	(17,152,789)	(17,826,634)
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF INCOME TAXES	(132,705)	12,461	118,343
TOTAL COMPREHENSIVE LOSS FOR THE YEAR	$ (14,743,221)	$ (17,140,328)	$ (17,708,291)
NET LOSS PER SHARE, BASIC AND DILUTED (in dollars per share)	$ (0.08)	$ (0.10)	$ (0.11)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING, BASIC AND DILUTED (in shares)	183,041,766	175,844,624	157,123,025