CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
CASH PROVIDED BY (USED IN): OPERATING ACTIVITIES
Net loss for the year	$ (17,826,634)	$ (17,971,056)	$ (17,329,872)
Adjustments to reconcile net loss to cash flows in operating activities
Stock-based compensation	3,504,058	3,769,370	3,084,163
Depreciation, amortization and accretion	354,624	497,728	875,724
Amortization of long-term debt discount	1,180,139	1,156,657	1,245,615
Impairment loss on mineral properties	0	297,942	97,114
Inventory write-down	0	60,694	0
Re-valuation of asset retirement obligations	0	(187,255)	(308,398)
Loss on disposition of assets	1,696	1,055	2,186
Deferred tax benefits	(707,511)	(34,355)	(32,239)
Share of gain from equity-accounted investment	(423,657)	0	0
Loss on settlement of liabilities	0	49,002	46,968
Reimbursable Expenses for Reno Creek Acquisition	483,829	0	0
Changes in operating assets and liabilities
Inventories	0	2,960	(23,317)
Prepaid expenses and deposits	302,258	190,580	(85,673)
Other current assets	(61,416)	(68,965)	(30,165)
Accounts payable and accrued liabilities	681,286	1,816,199	(622,713)
NET CASH FLOWS USED IN OPERATING ACTIVITIES	(12,511,328)	(10,419,444)	(13,080,607)
FINANCING ACTIVITIES
Shares issuance for cash, net of issuance costs	604,209	26,889,996	10,209,632
Due to a related party	39	768	(14,660)
NET CASH FLOWS PROVIDED BY FINANCING ACTIVITIES	604,248	26,890,764	10,194,972
INVESTING ACTIVITIES
Net cash received from asset acquisition	215,065	34,972	(46,084)
Investment in mineral rights and properties	(3,588,759)	0	0
Purchase of property, plant and equipment	(12,304)	(56,407)	(18,934)
Purchase of equity-accounted investment	0	(151,676)	0
Increase in other long-term assets	(346,474)	(864,806)	0
Purchase of short-term investments	(21,771,253)	(16,000,671)	0
Redemption of short-term investments	31,771,253	6,000,671	0
Proceeds from disposition of assets	0	0	818
Increase in reclamation deposits	(9,898)	(1)	(2)
NET CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES	6,257,630	(11,037,918)	(64,202)
NET CASH FLOWS	(5,649,450)	5,433,402	(2,949,837)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	12,575,973	7,142,571	10,092,408
CASH AND CASH EQUIVALENTS, END OF YEAR	$ 6,926,523	$ 12,575,973	$ 7,142,571

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Amount of cash (inflow) outflow from deposits classified as other.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The cash inflow from the additional capital contribution to the entity.

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Amount of cash inflow (outflow) from long-term debt by a related party. Related parties, include, but are not limited to, affiliates, owners or officers and their immediate families, and pension trusts.

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Amount of cash inflow from the sale of other assets recognized in investing activities.

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The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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