Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
OPERATING ACTIVITIES
Net loss for the year	$ (14,610,516)	$ (17,152,789)	$ (17,826,634)
Adjustments to reconcile net loss to cash flows in operating activities
Stock-based compensation	3,493,218	2,948,041	3,504,058
Depreciation, amortization and accretion	310,222	347,441	354,624
Amortization of long-term debt discount	1,669,514	1,464,989	1,180,139
Re-valuation of asset retirement obligations		(274,195)
(Gain) loss on disposition of assets	(2,343)	(1,595,513)	1,696
(Income) loss from equity-accounted investment	(2,967,583)	1,103,356	(423,657)
Deferred tax benefits	(5,551)	(14,372)	(707,511)
Realized loss on available-for-sale securities		799
Reimbursable Expenses for Reno Creek acquisition			483,829
Changes in operating assets and liabilities
Prepaid expenses and deposits	453,949	(62,225)	302,258
Other current assets	145,594	(86,395)	(61,416)
Accounts payable and accrued liabilities	(1,243,838)	679,522	681,286
Due to a related party	(37,346)	67,873	39
Other liabilities	(76,031)
NET CASH USED IN OPERATING ACTIVITIES	(12,870,711)	(12,573,468)	(12,511,289)
FINANCING ACTIVITIES
Proceeds from share issuance, net of issuance costs		23,843,995	604,209
Proceeds from government loans	307,092
NET CASH PROVIDED BY FINANCING ACTIVITIES	307,092	23,843,995	604,209
INVESTING ACTIVITIES
Net cash and restricted cash received from a mineral property acquisition			289,038
Investment in mineral rights and properties	(80,000)	(155,000)	(3,588,759)
Purchase of property, plant and equipment	(83,838)	(137,287)	(12,304)
Increase in other non-current assets			(346,474)
Investment in term deposits		(29,858,126)	(21,771,253)
Proceeds from redemption of term deposits	11,831,671	18,026,455	31,771,253
Proceeds from disposition of assets	3,127	16,587
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	11,670,960	(12,107,371)	6,341,501
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(892,659)	(836,844)	(5,565,579)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	7,879,578	8,716,422	14,282,001
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	$ 6,986,919	$ 7,879,578	$ 8,716,422