Corvus Gold ULC (KOR) 10-K 23 Aug 16 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	May 31, 2016	Nov. 30, 2016	Aug. 22, 2016
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Entity Registrant Name	Corvus Gold Inc.
Entity Central Index Key	1,507,964
Current Fiscal Year End Date	--05-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float		$ 16,164,696
Trading Symbol	CORVF
Entity Common Stock, Shares Outstanding			92,344,582

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS	May 31, 2016CAD	May 31, 2015CAD
Current assets
Cash and cash equivalents	CAD 4,783,519	CAD 5,159,962
Accounts receivable	28,810	26,015
Prepaid expenses	166,853	248,679
Total current assets	4,979,182	5,434,656
Property and equipment (note 5)	82,051	96,703
Capitalized acquisition costs (note 6)	4,261,680	4,866,634
Total assets	9,322,913	10,397,993
Current liabilities
Accounts payable and accrued liabilities (note 9)	236,861	419,228
Promissory note payable (note 7)	0	298,488
Total current liabilities	236,861	717,716
Asset retirement obligations (note 6)	293,578	132,579
Total liabilities	530,439	850,295
Shareholders' equity
Share capital (note 8)	69,890,670	64,256,889
Contributed surplus (note 8)	11,977,459	11,247,286
Accumulated other comprehensive income - cumulative translation differences	1,168,386	853,349
Deficit accumulated during the exploration stage	(74,244,041)	(66,809,826)
Total shareholders' equity	8,792,474	9,547,698
Total liabilities and shareholders’ equity	CAD 9,322,913	CAD 10,397,993

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Operating expenses
Administration	CAD 7,988	CAD 13,225
Consulting fees (notes 8 and 9)	712,943	827,163
Depreciation (note 5)	27,100	28,191
Exploration expenditures (notes 6 and 8)	2,856,345	5,640,920
Insurance	122,691	92,207
Investor relations (notes 8 and 9)	738,931	930,260
Office and miscellaneous	138,882	148,063
Professional fees (notes 8 and 9)	320,979	505,239
Regulatory	92,941	154,996
Rent	117,471	96,564
Travel	123,621	195,016
Wages and benefits (notes 8 and 9)	1,744,818	1,904,767
Total operating expenses	(7,004,710)	(10,536,611)
Other income (expense)
Interest income	16,399	22,115
Gain on sale of capitalized acquisition costs (notes 6b) and 6c))	92,397	0
Write-off of capitalized acquisition costs (note 6a))	(677,695)	0
Loss on sale of marketable securities (note 4)	0	(125,166)
Foreign exchange gain	139,394	62,175
Total other expense	(429,505)	(40,876)
Net loss for the year	(7,434,215)	(10,577,487)
Other comprehensive income
Exchange difference on translating foreign operations	315,037	702,157
Comprehensive loss for the year	CAD (7,119,178)	CAD (9,875,330)
Basic and diluted net loss per share	CAD (0.09)	CAD (0.14)
Weighted average number of shares outstanding	84,468,690	75,517,310

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS	12 Months Ended
	May 31, 2016CAD	May 31, 2015CAD
Operating activities
Net loss for the year	CAD (7,434,215)	CAD (10,577,487)
Add items not affecting cash:
Depreciation	27,100	28,191
Stock-based compensation (note 8)	825,921	1,485,695
Write-off of capitalized acquisition costs (note 6a))	677,695	0
Gain on sale of capitalized acquisition costs (notes 6b) and 6c))	(92,397)	0
Loss on sale of marketable securities	0	125,166
Foreign exchange gain	(139,394)	(62,175)
Changes in non-cash items:
Accounts receivable	(2,795)	(9,228)
Prepaid expenses	81,826	(31,363)
Accounts payable and accrued liabilities	(182,367)	(203,722)
Cash used in operating activities	(6,238,626)	(9,244,923)
Financing activities
Cash received from issuance of shares	5,552,667	10,689,450
Share issuance costs	(25,884)	(207,977)
Repayment of promissory note	(298,488)	0
Cash provided by financing activities	5,228,295	10,481,473
Investing activities
Cash received from sale of marketable securities	0	35,723
Expenditures on property and equipment	(7,153)	(13,822)
Refund of reclamation bond	0	626,324
Cash received from sale of capitalized acquisition costs (note 6b) and 6c))	499,313	0
Capitalized acquisition costs	(32,594)	(32,508)
Cash provided by investing activities	459,566	615,717
Effect of foreign exchange on cash	174,322	79,725
Increase (decrease) in cash and cash equivalents	(376,443)	1,931,992
Cash and cash equivalents, beginning of the year	5,159,962	3,227,970
Cash and cash equivalents, end of the year	CAD 4,783,519	CAD 5,159,962

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - CAD	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance at May. 31, 2014	CAD 7,391,260	CAD 53,703,440	CAD 9,768,967	CAD 151,192	CAD (56,232,339)
Balance (in shares) at May. 31, 2014		70,415,028
Net loss for the year	(10,577,487)	CAD 0	0	0	(10,577,487)
Shares issued for cash
Public offering	6,180,000	CAD 6,180,000	0	0	0
Public offering (in shares)		5,150,000
Private placement	4,500,000	CAD 4,500,000	0	0	0
Private placement (in shares)		4,500,000
Exercise of stock options	9,450	CAD 9,450	0	0	0
Exercise of stock options (in shares)		18,900
Share issued for capitalized acquisition costs	64,600	CAD 64,600	0	0	0
Share issued for capitalized acquisition costs (in shares)		85,000
Other comprehensive income
Exchange difference on translating foreign operations	702,157	CAD 0	0	702,157	0
Share issuance costs	(207,977)	(207,977)	0	0	0
Reclassification of contributed surplus on exercise of stock options	0	7,376	(7,376)	0	0
Stock-based compensation	1,485,695	0	1,485,695	0	0
Balance at May. 31, 2015	9,547,698	CAD 64,256,889	11,247,286	853,349	(66,809,826)
Balance (in shares) at May. 31, 2015		80,168,928
Net loss for the year	(7,434,215)	CAD 0	0	0	(7,434,215)
Shares issued for cash
Private placement	5,430,000	CAD 5,430,000	0	0	0
Private placement (in shares)		9,155,320
Exercise of stock options	122,667	CAD 122,667	0	0	0
Exercise of stock options (in shares)		245,334
Share issued for capitalized acquisition costs	11,250	CAD 11,250	0	0	0
Share issued for capitalized acquisition costs (in shares)		25,000
Other comprehensive income
Exchange difference on translating foreign operations	315,037	CAD 0	0	315,037	0
Share issuance costs	(25,884)	(25,884)	0	0	0
Reclassification of contributed surplus on exercise of stock options	0	95,748	(95,748)	0	0
Stock-based compensation	825,921	0	825,921	0	0
Balance at May. 31, 2016	CAD 8,792,474	CAD 69,890,670	CAD 11,977,459	CAD 1,168,386	CAD (74,244,041)
Balance (in shares) at May. 31, 2016		89,594,582

NATURE AND CONTINUANCE OF OPERA

NATURE AND CONTINUANCE OF OPERATIONS	12 Months Ended
	May 31, 2016
Accounting Policies [Abstract]
Nature of Operations [Text Block]	1. NATURE AND CONTINUANCE OF OPERATIONS On August 25, 2010, International Tower Hill Mines Ltd. (“ITH”) completed a Plan of Arrangement (the “Arrangement”) whereby its existing Alaska mineral properties (other than the Livengood project) and related assets and the North Bullfrog mineral property and related assets in Nevada (collectively, the “Nevada and Other Alaska Business”) were indirectly spun out into a new public company, being Corvus Gold Inc. (“Corvus” or the “Company”). As part of the Arrangement, ITH transferred its wholly-owned subsidiary Corvus Nevada (which held the North Bullfrog property), to Corvus and a wholly-owned Alaskan subsidiary of ITH, Talon Gold Alaska, Inc. sold to Raven Gold, the Terra, Chisna, LMS and West Pogo properties. As a consequence of the completion of the Arrangement, the Terra, Chisna, LMS, West Pogo and North Bullfrog properties were transferred to Corvus. The Company was incorporated on April 13, 2010 under the Business Corporations Act (British Columbia) The Company is engaged in the business of acquiring, exploring and evaluating mineral properties, and either joint venturing or developing these properties further or disposing of them when the evaluation is completed. At May 31, 2016, the Company had interests in a property in Nevada, U.S.A. The business of mining and exploration involves a high degree of risk and there can be no assurance that current exploration programs will result in profitable mining operations. The Company has no source of revenue, and has significant cash requirements to meet its administrative overhead and maintain its mineral property interests. The recoverability of amounts shown for mineral properties is dependent on several factors. These include the discovery of economically recoverable reserves, the ability of the Company to obtain the necessary financing to complete the development of these properties, and future profitable production or proceeds from disposition of mineral properties. The carrying value of the Company’s mineral properties does not reflect current or future values. These consolidated financial statements have been prepared on a going concern basis, which presume the realization of assets and discharge of liabilities in the normal course of business for the foreseeable future. The Company’s ability to continue as a going concern is dependent upon achieving profitable operations and/or obtaining additional financing. In assessing whether the going concern assumption is appropriate, management takes into account all available information about the future within one year from the date the consolidated financial statements are issued. There is substantial doubt upon the Company’s ability to continue as going concern, as explained in the following paragraphs. The Company has sustained significant losses from operations. has negative cash flows, and has an ongoing requirement for capital investment to explore its mineral properties. As at May 31, 2016, the Company had working capital of $ 4,742,321 4,716,940 2,550,000 1.02 2,601,000 , The Company also expects that it will need to raise substantial additional capital to accomplish its business plan over the next several years. Should such financing not be available in that time-frame, the Company will be required to reduce its activities and will not be able to carry out all of its presently planned exploration and development activities on its currently anticipated scheduling. These consolidated financial statements do not include any adjustments to the amounts and classification of assets and liabilities that might be necessary should the Company be unable to continue in business.

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	May 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	2. SIGNIFICANT ACCOUNTING POLICIES These consolidated financial statements are presented in Canadian dollars and have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”). These consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries (collectively, the “Group”), Corvus Gold (USA) Inc. (“Corvus USA”) (a Nevada corporation), Corvus Gold Nevada Inc. (“Corvus Nevada”) (a Nevada corporation), Raven Gold Alaska Inc. (“Raven Gold”) (an Alaska corporation) and SoN Land and Water LLC (“SoN”) (a Nevada limited liability company). All intercompany transactions and balances were eliminated upon consolidation. The preparation of these financial statements in accordance with US GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of expenses during the reporting year. Actual outcomes could differ from these estimates. These financial statements include estimates which, by their nature, are uncertain. The impacts of such estimates are pervasive throughout the financial statements, and may require accounting adjustments based on future occurrences. Revisions to accounting estimates are recognized in the year in which the estimate is revised and future periods if the revision affects both current and future years. These estimates are based on historical experience, current and future economic conditions and other factors, including expectations of future events that are believed to be reasonable under the circumstances. Significant estimates Significant assumptions about the future and other sources of estimation uncertainty that management has made at the end of the reporting year, that could result in a material adjustment to the carrying amounts of assets and liabilities, in the event that actual results differ from assumptions made, relate to, but are not limited to, the carrying value and the recoverability of the capitalized acquisition costs included in the Balance Sheet, the assumptions used to determine the fair value of stock-based compensation in the Statement of Operations and Comprehensive Loss, and the estimated amounts of reclamation and environmental obligations. Significant judgments Critical accounting judgments are accounting policies that have been identified as being complex or involving subjective judgments or assessments. The Company made the following critical accounting judgments: · The determination of deferred tax assets and liabilities recorded in the Balance Sheet. · The analysis of resource calculations, drill results, laboratory work, etc., which can impact the Company’s assessment of impairments, and provisions, if any, for environmental rehabilitation and restorations. · The determination of functional currency. In accordance with FAS 52 “Foreign Currency Translation” · The assessment of the Company’s ability to continue as a going concern. Cash and cash equivalents Cash equivalents include highly liquid investments in term deposits that are readily convertible to known amounts of cash with original maturities of three months or less, and term deposits with original term of maturities greater than three months but are cashable after 30 days with no penalties, and are subject to an insignificant risk of change in value. Marketable securities held in companies with an active market are classified as held-for-trading securities. Held-for-trading securities are recorded at fair value in the financial statements with unrealized gains and losses recorded in profit or loss in the Statement of Operations and Comprehensive Income (Loss). The presentation currency of the Company is the Canadian dollar. The functional currency of each of the parent company and its subsidiaries is measured using the currency of the primary economic environment in which that entity operates. The functional currency of Corvus USA, Corvus Nevada, Raven Gold and SoN is US dollars, and for the Company the functional currency is Canadian dollars. Transactions and balances Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the date of the transaction. Foreign currency monetary items are translated at the year-end exchange rate. Non-monetary items measured at historical cost continue to be carried at the exchange rate at the date of the transaction. Non-monetary items measured at fair value are reported at the exchange rate at the date when fair values were determined. Exchange differences arising on the translation of monetary items or on settlement of monetary items are recognized in profit or loss in the Statement of Operations and Comprehensive Income (Loss) in the year in which they arise. Exchange differences arising on the translation of non-monetary items are recognized in other comprehensive income (loss) in the Statement of Operations and Comprehensive Income (Loss) to the extent that gains and losses arising on those non-monetary items are also recognized in other comprehensive income (loss). Where the non-monetary gain or loss is recognized in profit or loss, the exchange component is also recognized in profit or loss. Parent and Subsidiary Companies The financial results and position of foreign operations whose functional currency is different from the presentation currency are translated as follows: · Assets and liabilities are translated at year-end exchange rates prevailing at that reporting date; and · Income and expenses are translated at monthly average exchange rates during the year. Exchange differences arising on translation of foreign operations are transferred directly to the Group’s exchange difference on translating foreign operations in the Statement of Operations and Comprehensive Income (Loss) and are reported as a separate component of shareholders’ equity titled “Cumulative Translation Differences”. These differences are recognized in profit or loss in the year in which the operation is disposed of. a) Recognition and measurement On initial recognition, property and equipment are valued at cost, being the purchase price and directly attributable costs of acquisition or construction required to bring the asset to the location and condition necessary to be capable of operating in the manner intended by the Company, including appropriate borrowing costs and the estimated present value of any future unavoidable costs of dismantling and removing items. Property and equipment is subsequently measured at cost less accumulated depreciation, less any accumulated impairment losses, with the exception of land which is not depreciated. When parts of an item of property and equipment have different useful lives, they are accounted for as separate items (major components) of property and equipment. b) Subsequent costs The cost of replacing part of an item of property and equipment is recognized in the carrying amount of the item if it is probable that the future economic benefit embodied within the part will flow to the Company and its cost can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of the day-to-day servicing of property and equipment are recognized in profit or loss as incurred. c) Major maintenance and repairs Subsequent costs are included in the asset’s carrying amount or recognized as a separate asset, as appropriate, only when it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. All other repairs and maintenance are charged to profit or loss during the financial year in which they are incurred. d) Gains and losses Gains and losses on disposal of an item of property and equipment are determined by comparing the proceeds from disposal with the carrying amount, and are recognized net within other items in profit or loss. e) Depreciation Depreciation is recognized in profit or loss on a declining-balance basis at the following annual rates: Computer equipment - 30% declining balance Vehicles - 30% declining balance Tent - 20% declining balance Additions during the year are depreciated at one-half the annual rates. Depreciation methods, useful lives and residual values are reviewed at each financial year-end and adjusted if appropriate. The Company’s mineral projects are currently in the exploration and evaluation phase. All direct costs related to the acquisition of mineral property interests are capitalized. Mineral property exploration costs are expensed as incurred. At such time that the Company determines that a mineral property can be economically developed, subsequent mineral property expenses will be capitalized during the development of such property. The Company assesses interests in exploration properties for impairment or when facts and circumstances suggest that the carrying amount of an asset may exceed its recoverable amount. Impairment analysis includes assessment of the following circumstances: a significant decrease in the market price of a long-lived asset or asset group; a significant adverse change in the extent or manner in which a long-lived asset or asset group is being used or in its physical condition; a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset or asset group, including an adverse action or assessment by a regulator; an accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of a long-lived asset or asset group; a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group; a current expectation that, more likely than not, a long-lived asset or asset group will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The term more likely than not refers to a level of likelihood that is more than 50%. The Company records a liability based on the best estimate of costs for site closure and reclamation activities that the Company is legally or contractually required to remediate and recorded at the time environmental disturbance occurs. The provision for closure and reclamation liabilities is estimated using expected cash flows based on engineering and environmental reports and accreted to full value over time through periodic charges to profit or loss. As at May 31, 2016, the Company recorded a provision of $ 293,578 224,000 132,579 107,000 The Company accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Under the asset and liability method, the effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is recognized if it is more likely than not that some portion or the entire deferred tax asset will not be recognized. The proceeds from the exercise of stock options, warrants and escrow shares are recorded as share capital in the amount for which the option, warrant or escrow share enabled the holder to purchase a share in the Company. Commissions paid to agents, and other related share issuance costs, such as legal, auditing, and printing, on the issue of the Company’s shares are charged directly to share capital. The Company has adopted a residual value method with respect to the measurement of shares and warrants issued as private placement units. The residual value method first allocates value to the more easily measurable component based on fair value and then the residual value, if any, to the less easily measurable component. The fair value of the common shares issued in the private placements was determined to be the more easily measurable component and were valued at their fair value, as determined by the closing quoted bid price on the announcement date. The balance, if any, is allocated to the attached warrants. Any fair value attributed to the warrants is recorded as warrants. Basic loss per share is calculated using the weighted average number of common shares outstanding during the year. The Company uses the treasury stock method to compute the dilutive effect of options, warrants and similar instruments. Under this method, the dilutive effect on earnings (loss) per share is calculated presuming the exercise of outstanding options, warrants and similar instruments. It assumes that the proceeds of such exercise would be used to repurchase common shares at the average market price during the year. However, the calculation of diluted loss per share excludes the effects of various conversions and exercise of options and warrants that would be anti-dilutive. For the year ended May 31, 2016, 7,981,000 7,396,334 The Company follows the provisions of Financial Accounting Standards Board Accounting Standards Codification Section 718 “Compensation - Stock Compensation”, which establishes accounting for equity based compensation awards to be accounted for using the fair value method. The Company uses the Black-Scholes option pricing model to determine the grant date fair value of the awards. Compensation expense is measured at the grant date and recognized over the requisite service period, which is generally the vesting period. All non-monetary transactions are measured at the fair value of the asset surrendered or the asset received, whichever is more reliable, unless the transaction lacks commercial substance or the fair value cannot be reliably established. The commercial substance requirement is met when the future cash flows are expected to change significantly as a result of the transaction. When the fair value of a non-monetary transaction cannot be reliably measured, it is recorded at the carrying amount (after reduction, when appropriate, for impairment) of the asset given up adjusted by the fair value of any monetary consideration received or given. When the asset received or the consideration given up is shares in an actively traded market, the value of those shares will be considered fair value. Where the Company’s exploration and development activities are conducted with others, the accounts reflect only the Company’s proportionate interest in such activities. The Company currently does not have any joint venture accounting.

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	May 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	3. FAIR VALUE OF FINANCIAL INSTRUMENTS Financial instruments recorded at fair value on the Consolidated Balance Sheet are classified using a fair value hierarchy that reflects the significance of the inputs used in making the measurements. The fair value hierarchy has the following levels: Level 1 – valuation based on quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 – valuation techniques based on inputs other than quoted prices included in level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices); and Level 3 – valuation techniques using inputs for the asset or liability that are not based on observable market data (unobservable inputs). The fair value hierarchy requires the use of observable market inputs whenever such inputs exist. A financial instrument is classified to the lowest level of the hierarchy for which a significant input has been considered in measuring fair value. May 31, 2016 Level 1 Cash and cash equivalents $ 4,783,519 May 31, 2015 Level 1 Cash and cash equivalents $ 5,159,962

MARKETABLE SECURITIES

MARKETABLE SECURITIES	12 Months Ended
	May 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	4. MARKETABLE SECURITIES During the year ended May 31, 2015, the Company sold 200,000 shares of WestMountain Gold for gross proceeds of $35,723 (USD29,058) and a realized net loss of $125,166.

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT	12 Months Ended
	May 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	5. PROPERTY AND EQUIPMENT Computer Vehicles Tent Total Cost Balance, May 31, 2014 $ 38,733 $ 73,962 $ 54,210 $ 166,905 Additions 13,822 - - 13,822 Currency translation adjustments 6,391 10,881 7,975 25,247 Balance, May 31, 2015 58,946 84,843 62,185 205,974 Additions 7,153 - - 7,153 Currency translation adjustments 2,786 4,591 3,365 10,742 Balance, May 31, 2016 $ 68,885 $ 89,434 $ 65,550 $ 223,869 Depreciation Balance, May 31, 2014 $ 21,978 $ 42,058 $ 5,422 $ 69,458 Depreciation for the year 7,497 10,247 10,447 28,191 Currency translation adjustments 3,160 6,918 1,544 11,622 Balance, May 31, 2015 32,635 59,223 17,413 109,271 Depreciation for the year 9,409 8,171 9,520 27,100 Currency translation adjustments 1,451 3,135 861 5,447 Balance, May 31, 2016 $ 43,495 $ 70,529 $ 27,794 $ 141,818 Carrying amounts Balance, May 31, 2015 $ 26,311 $ 25,620 $ 44,772 $ 96,703 Balance, May 31, 2016 $ 25,390 $ 18,905 $ 37,756 $ 82,051

MINERAL PROPERTIES

MINERAL PROPERTIES	12 Months Ended
	May 31, 2016
Mineral Industries Disclosures [Abstract]
Mineral Industries Disclosures [Text Block]	6. MINERAL PROPERTIES Chisna North Bullfrog LMS Total (note 6a)) (note 6d)) (note 6c)) Balance, May 31, 2014 $ 550,255 $ 3,168,810 $ 326,050 $ 4,045,115 Acquisition costs Cash payments (note 6d)(ii)(1) - 32,508 - 32,508 Shares issued (note 6d)(ii)(1) - 64,600 - 64,600 Asset retirement obligations - 132,579 - 132,579 Currency translation adjustments 80,950 462,915 47,967 591,832 Balance, May 31, 2015 631,205 3,861,412 374,017 4,866,634 Acquisition costs Cash payments (note 6d)(ii)(1) - 32,594 - 32,594 Shares issued (note 6d)(ii)(1) - 11,250 - 11,250 Asset retirement obligations - 153,825 - 153,825 Currency translation adjustments 46,490 202,599 27,546 276,635 Reclassified to asset held-for-sale - - (401,563) (401,563) Write-off of capitalized acquisition costs (677,695) - (677,695) Balance, May 31, 2016 $ - $ 4,261,680 $ - $ 4,261,680 West Pogo Chisna North LMS Total (note 6b)) (note 6a)) (note 6d)) (note 6c)) Exploration costs: Assay $ - $ - $ 757,432 $ - $ 757,432 Drilling - - 929,841 - 929,841 Equipment rental - - 51,347 - 51,347 Field costs 181 247 134,382 561 135,371 Geological/ Geophysical - 6,210 328,740 1,904 336,854 Land maintenance & tenure - 13,534 373,795 32,900 420,229 Permits - - 632 - 632 Studies - - 322,972 - 322,972 Transportation - - - 1,999 1,999 Travel - 913 66,858 - 67,771 181 20,904 2,965,999 37,364 3,024,448 Cost recovery (23,802) (39,463) - (104,838) (168,103) Total expenditures (recovery) for the year $ (23,621) $ (18,559) $ 2,965,999 $ (67,474) $ 2,856,345 The following table presents costs incurred for exploration and evaluation activities for the year ended May 31, 2015: West Pogo Chisna North LMS Total (note 6b)) (note 6a)) (note 6d)) (note 6c)) Exploration costs: Aircraft services $ - $ 11,202 $ - $ - $ 11,202 Assay - 12,926 935,239 - 948,165 Drilling - - 1,577,253 - 1,577,253 Equipment rental - 1,466 232,808 - 234,274 Field costs 2,027 9,218 317,575 337 329,157 Geological/ Geophysical 4,201 1,984 1,009,824 29,599 1,045,608 Land maintenance & tenure 11,023 77,972 263,754 27,331 380,080 Permits - - 1,700 - 1,700 Studies - - 920,301 - 920,301 Transportation - - - 1,130 1,130 Travel - 5,133 185,494 1,423 192,050 Total expenditures for the year $ 17,251 $ 119,901 $ 5,443,948 $ 59,820 $ 5,640,920 a) Chisna Property, Alaska The Chisna property is located in the eastern Alaska Range, Alaska, and is comprised of unpatented mineral claims owned 100 On November 2, 2009, ITH and Talon Gold entered into an agreement (as amended) with Ocean Park Ventures Corp. (“OPV”). Pursuant to the agreement, an Alaskan subsidiary of OPV and Raven Gold formed a joint venture for the purpose of exploring and developing the Chisna property. On November 7, 2012, OPV withdrew from the joint venture and thereby returned 100 On March 24, 2010, Raven Gold entered into a Mineral Exploration Agreement with Option to Lease with Ahtna Incorporated (“Ahtna”), an Alaska Native Regional Corporation, concerning approximately 26,516 During the year ended May 31, 2015, the Company gave notification and terminated the Ahtna lease. During the period ended February 29, 2016, the Company wrote off the Chisna property as the Company, at the time, had reduced the Chisna property to 36 core claims. On April 5, 2016, Raven Gold completed a transaction with Millrock Resources Inc. (“Millrock”) on the Chisna property. The ownership of the property was sold for USD 25,000 1 1 b) West Pogo Property, Alaska The West Pogo property is located approximately 50 kilometres north of Delta Junction, Alaska, and consists of unpatented mineral claims owned 100 During the year ended May 31, 2014, the Company wrote off the West Pogo property, as there had been a delay in exploration work on the property for an extended period of time. On July 29, 2015, Raven Gold completed a transaction with Millrock on the West Pogo and Goodpaster database projects in Alaska. The ownership position was sold for $ 25,728 20,000 136,058 100,000 3 1 1 2 1 5 1 1,500 2 c) LMS Property, Alaska The LMS property consists of unpatented mineral claims owned 100 473,585 350,000 3 1 1 4,000,000 d) North Bullfrog Project, Nevada The Company’s North Bullfrog project consists of certain leased patented lode mining claims and federal unpatented mining claims owned 100 (i) Interests acquired from Redstar Gold Corp. On October 9, 2009, a US subsidiary of ITH at the time (Corvus Nevada) completed the acquisition of all of the interests of Redstar Gold Corp. (“Redstar”) and Redstar Gold U.S.A. Inc. (“Redstar US”) in the North Bullfrog project, which consisted of the following leases: (1) Pursuant to a mining lease and option to purchase agreement made effective October 27, 2008 between Redstar and an arm’s length limited liability company, Redstar has leased (and has the option to purchase) 12 patented mining claims referred to as the “Connection” property. The ten-year, renewable mining lease requires advance minimum royalty payments (recoupable from production royalties, but not applicable to the purchase price if the option to purchase is exercised) of USD 10,800 10,800 16,200 1,000,000 4 1,250,000 1 5,000,000 (2) Pursuant to a mining lease made and entered into as of May 8, 2006 between Redstar and two arm’s length individuals, Redstar has leased 3 patented mining claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 4,000 3,500 4,500 2 1,000,000 1 2,000,000 (3) Pursuant to a mining lease made and entered into as of May 8, 2006 between Redstar and an arm’s length private Nevada corporation, Redstar has leased 2 patented mining claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 years, and for so long thereafter as mining activities continue on the claims or contiguous claims held by the lessee. The lessee is required to pay advance minimum royalty payments (recoupable from production royalties) of USD 2,000 2,000 3,000 3 850,000 1 2,550,000 2,400 2,400 3,600 3 770,000 1 2,310,000 (4) Pursuant to a mining lease made and entered into as of May 16, 2006 between Redstar and an arm’s length individual, Redstar has leased 12 patented mineral claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 20,500 20,000 4 1,000,000 1 4,000,000 (5) Pursuant to a mining lease made and entered into as of May 22, 2006 between Redstar and two arm’s length individuals, Redstar has leased 3 patented mineral claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 years, and for so long thereafter as mining activities continue on the claims or contiguous claims held by the lessee. The lessee is required to pay advance minimum royalty payments (recoupable from production royalties) of USD 8,000 4,800 7,200 2 1,000,000 1 2,000,000 (6) Pursuant to a mining lease made and entered into as of June 16, 2006 between Redstar and an arm’s length individual, Redstar has leased one patented mineral claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 2,000 2,000 3,000 2 1,000,000 1 2,000,000 As a consequence of the acquisition of Redstar and Redstar US’s interest in the foregoing leases, Corvus Nevada is now the lessee under all of such leases. (ii) Interests acquired directly by Corvus Nevada (1) Pursuant to a mining lease and option to purchase agreement made effective December 1, 2007 between Corvus Nevada and a group of arm’s length limited partnerships, Corvus Nevada has leased (and has the option to purchase) patented mining claims referred to as the “Mayflower” claims which form part of the North Bullfrog project. The terms of the lease/option are as follows: ¤ Terms 100,000 ¤ Lease Payments 5,000 25,000 5,000 20,000 20,000 108,750 46,250 10,000 50,000 50,000 10,000 50,000 126,924 10,000 50,000 35,871 10,000 50,000 21,200 10,000 50,000 19,237 ¤ Anti-Dilution: 85,000 10,000 25,000 25,000 ¤ Work Commitments 100,000 200,000 300,000 ¤ Retained Royalty 2 400 3 401 500 4 500 (2) Pursuant to a mining lease and option to purchase made effective March 1, 2011 between Corvus Nevada and an arm’s length individual, Corvus Nevada has leased, and has the option to purchase, 2 patented mineral claims which form part of the North Bullfrog project holdings. The lease is for an initial term of 10 20,000 25,000 30,000 2 1,000,000 1 2,000,000 (3) Pursuant to a purchase agreement made effective March 28, 2013, Corvus Nevada agreed to purchase the surface rights of five patented mining claims owned by two arm’s length individuals for USD 160,000 0.02 12 240,000 4.77 406,240 400,000 157,408 248,832 240,000 (4) In December 2013, SoN completed the purchase of a parcel of land approximately 30 km north of the North Bullfrog project which carries with it 1,600 1,100,118 1,034,626 (5) On March 30, 2015, Lunar Landing, LLC signed a lease agreement with Corvus Nevada to lease private property containing the three patented Sunflower claims to Corvus Nevada, which are adjacent to the Yellow Rose claims leased in 2014. The term of the lease is 3 years with provision to extend the lease for an additional 7 5,000 5,000 The lease includes a 4% NSR royalty on production, with an option to purchase the royalty for USD 500,000 per 1% or USD 2,000,000 for the entire 4% royalty. The lease also includes the option to purchase the property for USD 300,000. Acquisitions The acquisition of title to mineral properties is a detailed and time-consuming process. The Company has taken steps, in accordance with industry norms, to verify title to mineral properties in which it has an interest. Although the Company has taken every reasonable precaution to ensure that legal title to its properties is properly recorded in the name of the Company (or, in the case of an option, in the name of the relevant optionor), there can be no assurance that such title will ultimately be secured. Environmental Expenditures The operations of the Company may in the future be affected from time to time in varying degrees by changes in environmental regulations, including those for future removal and site restoration costs. Both the likelihood of new regulations and their overall effect upon the Company vary greatly and are not predictable. The Company’s policy is to meet or, if possible, surpass standards set by relevant legislation by application of technically proven and economically feasible measures. Environmental expenditures that relate to ongoing environmental and reclamation programs are charged against earnings as incurred or capitalized and amortized depending on their future economic benefits. Estimated future removal and site restoration costs, when the ultimate liability is reasonably determinable, are charged against earnings over the estimated remaining life of the related business operation, net of expected recoveries. The Company has estimated the fair value of the liability for asset retirement that arose as a result of exploration activities to be $ 293,578 224,000 132,579 107,000

PROMISSORY NOTE PAYABLE

PROMISSORY NOTE PAYABLE	12 Months Ended
	May 31, 2016
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	7. PROMISSORY NOTE PAYABLE On March 28, 2013, the Company issued a promissory note payable of USD 240,000 4.77

SHARE CAPITAL

SHARE CAPITAL	12 Months Ended
	May 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	8. SHARE CAPITAL Authorized Unlimited common shares without par value. Share issuances During the year ended May 31, 2016: a) On September 1, 2015, the Company closed a non-brokered private placement equity financing and issued 4,255,320 0.47 2,000,000 8,380 b) On November 18, 2015, the Company issued 25,000 11,250 5,021 c) On March 11, 2016, the Company closed a non-brokered private placement equity financing and issued 4,900,000 0.70 3,430,000 12,483 d) An aggregate of 245,334 245,334 122,667 During the year ended May 31, 2015: a) On August 27, 2014, the Company closed a non-brokered public equity financing and issued 5,150,000 1.20 6,180,000 190,167 b) On February 27, 2015, the Company closed a non-brokered private placement equity financing and issued 4,500,000 1.00 4,500,000 17,810 c) An aggregate of 18,900 18,900 9,450 d) On April 8, 2015, the Company issued 85,000 64,600 Stock options Stock options awarded to employees and non-employees by the Company are measured and recognized in the Consolidated Statement of Operations and Comprehensive Loss over the vesting period. The Company has adopted an incentive stock option plan (the “2010 Plan”). The essential elements of the 2010 Plan provide that the aggregate number of common shares of the Company’s share capital that may be made issuable pursuant to options granted under the 2010 Plan (together with any other shares which may be issued under other share compensation plans of the Company) may not exceed 10 2016 2015 Number of Weighted Number of Weighted Balance, beginning of the year 7,396,334 $ 0.94 6,175,234 $ 0.84 Granted 1,650,000 0.48 1,575,000 1.34 Exercised (245,334) (0.50) (18,900) (0.50) Forfeited (820,000) (0.94) - - Expired - - (335,000) (1.00) Balance, end of the year 7,981,000 $ 0.85 7,396,334 $ 0.94 The weighted average remaining contractual life of options outstanding at May 31, 2016 was 2.42 2.85 2016 2015 Expiry Date Exercise Number Exercisable Exercise Number of Exercisable July 29, 2016 (Note 14a)) $ 0.50 219,100 219,100 $ 0.50 464,434 464,434 November 17, 2016 $ 0.67 210,000 210,000 $ 0.67 210,000 210,000 January 23, 2017 $ 1.10 50,000 50,000 $ 1.10 50,000 25,000 May 1, 2017 $ 0.73 50,000 50,000 $ 0.73 50,000 25,000 May 29, 2017 $ 0.92 300,000 300,000 $ 0.92 300,000 300,000 September 19, 2017 $ 0.96 2,016,900 2,016,900 $ 0.96 2,436,900 2,436,900 October 29, 2017 $ 0.96 100,000 100,000 $ 0.96 100,000 100,000 August 16, 2018 $ 0.76 2,120,000 2,120,000 $ 0.76 2,420,000 1,611,720 September 8, 2019 $ 1.40 1,265,000 842,490 $ 1.40 1,365,000 454,545 September 9, 2020 $ 0.46 640,000 213,120 $ - - - November 13, 2020 $ 0.49 1,010,000 336,330 $ - - - 7,981,000 6,457,940 7,396,334 5,627,599 420,866 1,109,011 For the year ended May 31, 2016 2015 Risk-free interest rate 0.88 % 1.50 % Expected life of options 5 years 4.62 years Annualized volatility 72.33 % 69.21 % Dividend yield 0 % 0.0 % Exercise price $ 0.48 $ 1.34 Fair value per share $ 0.26 $ 0.70 Annualized volatility was determined by reference to historic volatility of the Company. For the year ended May 31, 2016 2015 Consulting fees $ 415,360 $ 570,913 Exploration expenditures – Geological/geophysical 18,468 36,820 Investor relations 96,309 208,336 Professional fees 16,678 48,841 Wages and benefits 279,106 620,785 $ 825,921 $ 1,485,695

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	May 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	9. RELATED PARTY TRANSACTIONS For the year ended May 31, 2016 2015 Consulting fees to CFO $ 105,333 $ 97,000 Wages and benefits to CEO and COO 806,046 620,301 Wages and benefits to former President 234,997 281,592 Directors fees (included in consulting fees) 151,250 122,750 Fees to Vice President of Corporate Communications (included in investor relations) 190,000 180,000 Professional fees to former Vice President - 25,680 Stock-based compensation to related parties 653,520 1,247,408 $ 2,141,146 $ 2,574,731 As at May 31, 2016, included in accounts payable and accrued liabilities was $ 7,628 9,880 These amounts were unsecured, non-interest bearing and had no fixed terms or terms of repayment. Accordingly, fair value could not be readily determined. The Company had entered into a retainer agreement dated June 1, 2011 with Lawrence W. Talbot Law Corporation (“LWTLC”), a company with officers in common, pursuant to which LWTLC agreed to provide legal services to the Company. Pursuant to the retainer agreement, the Company agreed to pay LWTLC a minimum annual retainer of $ 72,000 73,830 The Company has also entered into change of control agreements with officers of the Company. In the case of termination, the officers are entitled to an amount equal to a multiple (ranging from two times to three times) of the sum of the annual base salary then payable to the officer, the aggregate amount of bonus(es) (if any) paid to the officer within the calendar year immediately preceding the Effective Date of Termination, and an amount equal to the vacation pay which would otherwise be payable for the one year period next following the Effective Date of Termination.

GEOGRAPHIC SEGMENTED INFORMATIO

GEOGRAPHIC SEGMENTED INFORMATION	12 Months Ended
	May 31, 2016
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	10. GEOGRAPHIC SEGMENTED INFORMATION Canada United States Total May 31, 2016 Capitalized acquisition costs $ - $ 4,261,680 $ 4,261,680 Property and equipment $ 8,068 $ 73,983 $ 82,051 May 31, 2015 Capitalized acquisition costs $ - $ 4,866,634 $ 4,866,634 Property and equipment $ 2,840 $ 93,863 $ 96,703 For the year ended May 31, 2016 2015 Net loss for the year – Canada $ (2,118,555) $ (3,126,865) Net loss for the year – United States (5,315,660) (7,450,622) Net loss for the year $ (7,434,215) $ (10,577,487)

SUBSIDIARIES

SUBSIDIARIES	12 Months Ended
	May 31, 2016
Subsidiaries [Abstract]
Subsidiaries [Text Block]	11. SUBSIDIARIES Country of Principal The Company’s The Company’s Corvus Gold (USA) Inc. USA Holding company 100 % 100 % Raven Gold Alaska Inc. USA Exploration company 100 % 100 % Corvus Gold Nevada Inc. USA Exploration company 100 % 100 % SoN Land & Water LLC USA Exploration company 100 % 100 %

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
	May 31, 2016
Supplemental Cash Flow Information [Abstract]
Cash Flow, Supplemental Disclosures [Text Block]	12. SUPPLEMENTAL CASH FLOW INFORMATION For the year ended May 31, 2016 2015 Supplemental cash flow information Interest paid (received) $ 5,113 $ (11,661) Income taxes paid (received) $ - $ - Non-cash financing and investing transactions Shares issued to acquire mineral properties $ 11,250 $ 64,600 Change in asset retirement obligations included in capitalized acquisition costs $ 153,825 $ 132,579 Reclassification of contributed surplus on exercise of stock options $ 95,748 $ 7,376

INCOME TAXES

INCOME TAXES	12 Months Ended
	May 31, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	13. INCOME TAXES 2016 2015 Loss before income taxes $ (7,434,215) $ (10,577,487) Statutory Canadian corporate tax rate 26.00 % 26.00 % Income tax recovery at statutory rates $ (1,932,896) $ (2,750,147) Stock-based compensation 214,739 386,281 Effect of tax rate change - 775,666 Difference in tax rates in other jurisdictions (422,602) (647,273) Tax benefits not realized 2,140,759 2,235,473 Income tax recovery $ - $ - 2016 2015 Deferred income tax assets (liabilities) Mineral properties $ 15,907,000 $ 13,942,000 Property and equipment 30,000 19,000 Share issuance costs 45,000 56,000 Non-capital losses available for future periods 6,451,000 5,316,000 22,433,000 19,333,000 Valuation allowance (22,433,000) (19,333,000) Net deferred tax assets $ - $ - At May 31, 2016, the Company has available non-capital tax losses for Canadian income tax purposes of approximately $ 7,804,000 13,004,000 Canada United States 2029 $ - $ 1,253,000 2030 - 2,000 2031 379,000 186,000 2032 1,089,000 1,595,000 2033 1,443,000 2,106,000 2034 1,733,000 4,102,000 2035 1,806,000 1,906,000 2036 1,354,000 1,854,000 $ 7,804,000 $ 13,004,000 In addition, the Company has available mineral resource expenses that are related to the Company’s exploration activities in the United States of approximately $ 50,526,000 333,000

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	May 31, 2016
Subsequent Events [Abstract]
Subsequent Events [Text Block]	14. SUBSEQUENT EVENTS a) On June 10, 2016, 200,000 200,000 100,000 b) On June 22, 2016, the Company granted incentive stock options to consultants of the Company to purchase 50,000 1.02 33.3 33.3 33.4 c) On July 15, 2016, the Company closed a non-brokered private placement equity financing and issued 2,550,000 1.02 2,601,000

SIGNIFICANT ACCOUNTING POLICI20

SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	May 31, 2016
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of presentation These consolidated financial statements are presented in Canadian dollars and have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”).
Consolidation, Policy [Policy Text Block]	Basis of consolidation These consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries (collectively, the “Group”), Corvus Gold (USA) Inc. (“Corvus USA”) (a Nevada corporation), Corvus Gold Nevada Inc. (“Corvus Nevada”) (a Nevada corporation), Raven Gold Alaska Inc. (“Raven Gold”) (an Alaska corporation) and SoN Land and Water LLC (“SoN”) (a Nevada limited liability company). All intercompany transactions and balances were eliminated upon consolidation.
Use of Estimates, Policy [Policy Text Block]	The preparation of these financial statements in accordance with US GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of expenses during the reporting year. Actual outcomes could differ from these estimates. These financial statements include estimates which, by their nature, are uncertain. The impacts of such estimates are pervasive throughout the financial statements, and may require accounting adjustments based on future occurrences. Revisions to accounting estimates are recognized in the year in which the estimate is revised and future periods if the revision affects both current and future years. These estimates are based on historical experience, current and future economic conditions and other factors, including expectations of future events that are believed to be reasonable under the circumstances. Significant estimates Significant assumptions about the future and other sources of estimation uncertainty that management has made at the end of the reporting year, that could result in a material adjustment to the carrying amounts of assets and liabilities, in the event that actual results differ from assumptions made, relate to, but are not limited to, the carrying value and the recoverability of the capitalized acquisition costs included in the Balance Sheet, the assumptions used to determine the fair value of stock-based compensation in the Statement of Operations and Comprehensive Loss, and the estimated amounts of reclamation and environmental obligations. Significant judgments Critical accounting judgments are accounting policies that have been identified as being complex or involving subjective judgments or assessments. The Company made the following critical accounting judgments: · The determination of deferred tax assets and liabilities recorded in the Balance Sheet. · The analysis of resource calculations, drill results, laboratory work, etc., which can impact the Company’s assessment of impairments, and provisions, if any, for environmental rehabilitation and restorations. · The determination of functional currency. In accordance with FAS 52 “Foreign Currency Translation” · The assessment of the Company’s ability to continue as a going concern.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and cash equivalents Cash equivalents include highly liquid investments in term deposits that are readily convertible to known amounts of cash with original maturities of three months or less, and term deposits with original term of maturities greater than three months but are cashable after 30 days with no penalties, and are subject to an insignificant risk of change in value.
Marketable Securities, Policy [Policy Text Block]	Marketable securities Marketable securities held in companies with an active market are classified as held-for-trading securities. Held-for-trading securities are recorded at fair value in the financial statements with unrealized gains and losses recorded in profit or loss in the Statement of Operations and Comprehensive Income (Loss).
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign currency translation The presentation currency of the Company is the Canadian dollar. The functional currency of each of the parent company and its subsidiaries is measured using the currency of the primary economic environment in which that entity operates. The functional currency of Corvus USA, Corvus Nevada, Raven Gold and SoN is US dollars, and for the Company the functional currency is Canadian dollars. Transactions and balances Foreign currency transactions are translated into the functional currency using the exchange rates prevailing at the date of the transaction. Foreign currency monetary items are translated at the year-end exchange rate. Non-monetary items measured at historical cost continue to be carried at the exchange rate at the date of the transaction. Non-monetary items measured at fair value are reported at the exchange rate at the date when fair values were determined. Exchange differences arising on the translation of monetary items or on settlement of monetary items are recognized in profit or loss in the Statement of Operations and Comprehensive Income (Loss) in the year in which they arise. Exchange differences arising on the translation of non-monetary items are recognized in other comprehensive income (loss) in the Statement of Operations and Comprehensive Income (Loss) to the extent that gains and losses arising on those non-monetary items are also recognized in other comprehensive income (loss). Where the non-monetary gain or loss is recognized in profit or loss, the exchange component is also recognized in profit or loss. Parent and Subsidiary Companies The financial results and position of foreign operations whose functional currency is different from the presentation currency are translated as follows: · Assets and liabilities are translated at year-end exchange rates prevailing at that reporting date; and · Income and expenses are translated at monthly average exchange rates during the year. Exchange differences arising on translation of foreign operations are transferred directly to the Group’s exchange difference on translating foreign operations in the Statement of Operations and Comprehensive Income (Loss) and are reported as a separate component of shareholders’ equity titled “Cumulative Translation Differences”. These differences are recognized in profit or loss in the year in which the operation is disposed of.
Property, Plant and Equipment, Policy [Policy Text Block]	Property and equipment a) Recognition and measurement On initial recognition, property and equipment are valued at cost, being the purchase price and directly attributable costs of acquisition or construction required to bring the asset to the location and condition necessary to be capable of operating in the manner intended by the Company, including appropriate borrowing costs and the estimated present value of any future unavoidable costs of dismantling and removing items. Property and equipment is subsequently measured at cost less accumulated depreciation, less any accumulated impairment losses, with the exception of land which is not depreciated. When parts of an item of property and equipment have different useful lives, they are accounted for as separate items (major components) of property and equipment. b) Subsequent costs The cost of replacing part of an item of property and equipment is recognized in the carrying amount of the item if it is probable that the future economic benefit embodied within the part will flow to the Company and its cost can be measured reliably. The carrying amount of the replaced part is derecognized. The costs of the day-to-day servicing of property and equipment are recognized in profit or loss as incurred. c) Major maintenance and repairs Subsequent costs are included in the asset’s carrying amount or recognized as a separate asset, as appropriate, only when it is probable that future economic benefits associated with the item will flow to the Company and the cost of the item can be measured reliably. All other repairs and maintenance are charged to profit or loss during the financial year in which they are incurred. d) Gains and losses Gains and losses on disposal of an item of property and equipment are determined by comparing the proceeds from disposal with the carrying amount, and are recognized net within other items in profit or loss. e) Depreciation Depreciation is recognized in profit or loss on a declining-balance basis at the following annual rates: Computer equipment - 30% declining balance Vehicles - 30% declining balance Tent - 20% declining balance Additions during the year are depreciated at one-half the annual rates. Depreciation methods, useful lives and residual values are reviewed at each financial year-end and adjusted if appropriate.
Capitalization of Internal Costs, Policy [Policy Text Block]	Mineral properties and exploration and evaluation expenditures The Company’s mineral projects are currently in the exploration and evaluation phase. All direct costs related to the acquisition of mineral property interests are capitalized. Mineral property exploration costs are expensed as incurred. At such time that the Company determines that a mineral property can be economically developed, subsequent mineral property expenses will be capitalized during the development of such property. The Company assesses interests in exploration properties for impairment or when facts and circumstances suggest that the carrying amount of an asset may exceed its recoverable amount. Impairment analysis includes assessment of the following circumstances: a significant decrease in the market price of a long-lived asset or asset group; a significant adverse change in the extent or manner in which a long-lived asset or asset group is being used or in its physical condition; a significant adverse change in legal factors or in the business climate that could affect the value of a long-lived asset or asset group, including an adverse action or assessment by a regulator; an accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of a long-lived asset or asset group; a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group; a current expectation that, more likely than not, a long-lived asset or asset group will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The term more likely than not refers to a level of likelihood that is more than 50%.
Asset Retirement Obligations, Policy [Policy Text Block]	Asset retirement obligations The Company records a liability based on the best estimate of costs for site closure and reclamation activities that the Company is legally or contractually required to remediate and recorded at the time environmental disturbance occurs. The provision for closure and reclamation liabilities is estimated using expected cash flows based on engineering and environmental reports and accreted to full value over time through periodic charges to profit or loss. As at May 31, 2016, the Company recorded a provision of $ 293,578 224,000 132,579 107,000
Income Tax, Policy [Policy Text Block]	Income taxes The Company accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Under the asset and liability method, the effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is recognized if it is more likely than not that some portion or the entire deferred tax asset will not be recognized.
Share Capital [Policy Text Block]	Share capital The proceeds from the exercise of stock options, warrants and escrow shares are recorded as share capital in the amount for which the option, warrant or escrow share enabled the holder to purchase a share in the Company. Commissions paid to agents, and other related share issuance costs, such as legal, auditing, and printing, on the issue of the Company’s shares are charged directly to share capital.
Equity Method Investments Issuances, Policy [Policy Text Block]	Valuation of equity units issued in private placements The Company has adopted a residual value method with respect to the measurement of shares and warrants issued as private placement units. The residual value method first allocates value to the more easily measurable component based on fair value and then the residual value, if any, to the less easily measurable component. The fair value of the common shares issued in the private placements was determined to be the more easily measurable component and were valued at their fair value, as determined by the closing quoted bid price on the announcement date. The balance, if any, is allocated to the attached warrants. Any fair value attributed to the warrants is recorded as warrants.
Earnings Per Share, Policy [Policy Text Block]	Earnings (loss) per share Basic loss per share is calculated using the weighted average number of common shares outstanding during the year. The Company uses the treasury stock method to compute the dilutive effect of options, warrants and similar instruments. Under this method, the dilutive effect on earnings (loss) per share is calculated presuming the exercise of outstanding options, warrants and similar instruments. It assumes that the proceeds of such exercise would be used to repurchase common shares at the average market price during the year. However, the calculation of diluted loss per share excludes the effects of various conversions and exercise of options and warrants that would be anti-dilutive. For the year ended May 31, 2016, 7,981,000 7,396,334
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-based compensation The Company follows the provisions of Financial Accounting Standards Board Accounting Standards Codification Section 718 “Compensation - Stock Compensation”, which establishes accounting for equity based compensation awards to be accounted for using the fair value method. The Company uses the Black-Scholes option pricing model to determine the grant date fair value of the awards. Compensation expense is measured at the grant date and recognized over the requisite service period, which is generally the vesting period.
Non Monetary Transactions [Policy Text Block]	Non-monetary transactions All non-monetary transactions are measured at the fair value of the asset surrendered or the asset received, whichever is more reliable, unless the transaction lacks commercial substance or the fair value cannot be reliably established. The commercial substance requirement is met when the future cash flows are expected to change significantly as a result of the transaction. When the fair value of a non-monetary transaction cannot be reliably measured, it is recorded at the carrying amount (after reduction, when appropriate, for impairment) of the asset given up adjusted by the fair value of any monetary consideration received or given. When the asset received or the consideration given up is shares in an actively traded market, the value of those shares will be considered fair value.
Interest in Unincorporated Joint Ventures or Partnerships, Policy [Policy Text Block]	Joint venture accounting Where the Company’s exploration and development activities are conducted with others, the accounts reflect only the Company’s proportionate interest in such activities. The Company currently does not have any joint venture accounting.

FAIR VALUE OF FINANCIAL INSTR21

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	May 31, 2016
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	The following table presents the financial instruments recorded at fair value, classified using the fair value hierarchy described above: May 31, 2016 Level 1 Cash and cash equivalents $ 4,783,519 May 31, 2015 Level 1 Cash and cash equivalents $ 5,159,962

PROPERTY AND EQUIPMENT (Tables)

PROPERTY AND EQUIPMENT (Tables)	12 Months Ended
	May 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	Computer Vehicles Tent Total Cost Balance, May 31, 2014 $ 38,733 $ 73,962 $ 54,210 $ 166,905 Additions 13,822 - - 13,822 Currency translation adjustments 6,391 10,881 7,975 25,247 Balance, May 31, 2015 58,946 84,843 62,185 205,974 Additions 7,153 - - 7,153 Currency translation adjustments 2,786 4,591 3,365 10,742 Balance, May 31, 2016 $ 68,885 $ 89,434 $ 65,550 $ 223,869 Depreciation Balance, May 31, 2014 $ 21,978 $ 42,058 $ 5,422 $ 69,458 Depreciation for the year 7,497 10,247 10,447 28,191 Currency translation adjustments 3,160 6,918 1,544 11,622 Balance, May 31, 2015 32,635 59,223 17,413 109,271 Depreciation for the year 9,409 8,171 9,520 27,100 Currency translation adjustments 1,451 3,135 861 5,447 Balance, May 31, 2016 $ 43,495 $ 70,529 $ 27,794 $ 141,818 Carrying amounts Balance, May 31, 2015 $ 26,311 $ 25,620 $ 44,772 $ 96,703 Balance, May 31, 2016 $ 25,390 $ 18,905 $ 37,756 $ 82,051

MINERAL PROPERTIES (Tables)

MINERAL PROPERTIES (Tables)	12 Months Ended
	May 31, 2016
Mineral Industries Disclosures [Abstract]
Capitalized Costs Relating to Acquisition Activities Disclosure [Table Text Block]	The Company had the following activity related to capitalized acquisition costs: Chisna North Bullfrog LMS Total (note 6a)) (note 6d)) (note 6c)) Balance, May 31, 2014 $ 550,255 $ 3,168,810 $ 326,050 $ 4,045,115 Acquisition costs Cash payments (note 6d)(ii)(1) - 32,508 - 32,508 Shares issued (note 6d)(ii)(1) - 64,600 - 64,600 Asset retirement obligations - 132,579 - 132,579 Currency translation adjustments 80,950 462,915 47,967 591,832 Balance, May 31, 2015 631,205 3,861,412 374,017 4,866,634 Acquisition costs Cash payments (note 6d)(ii)(1) - 32,594 - 32,594 Shares issued (note 6d)(ii)(1) - 11,250 - 11,250 Asset retirement obligations - 153,825 - 153,825 Currency translation adjustments 46,490 202,599 27,546 276,635 Reclassified to asset held-for-sale - - (401,563) (401,563) Write-off of capitalized acquisition costs (677,695) - (677,695) Balance, May 31, 2016 $ - $ 4,261,680 $ - $ 4,261,680
Cost Incurred in Acquisition Exploration and Evaluation Activities Disclosure [Table Text Block]	The following table presents costs incurred for exploration and evaluation activities for the year ended May 31, 2016: West Pogo Chisna North LMS Total (note 6b)) (note 6a)) (note 6d)) (note 6c)) Exploration costs: Assay $ - $ - $ 757,432 $ - $ 757,432 Drilling - - 929,841 - 929,841 Equipment rental - - 51,347 - 51,347 Field costs 181 247 134,382 561 135,371 Geological/ Geophysical - 6,210 328,740 1,904 336,854 Land maintenance & tenure - 13,534 373,795 32,900 420,229 Permits - - 632 - 632 Studies - - 322,972 - 322,972 Transportation - - - 1,999 1,999 Travel - 913 66,858 - 67,771 181 20,904 2,965,999 37,364 3,024,448 Cost recovery (23,802) (39,463) - (104,838) (168,103) Total expenditures (recovery) for the year $ (23,621) $ (18,559) $ 2,965,999 $ (67,474) $ 2,856,345 The following table presents costs incurred for exploration and evaluation activities for the year ended May 31, 2015: West Pogo Chisna North LMS Total (note 6b)) (note 6a)) (note 6d)) (note 6c)) Exploration costs: Aircraft services $ - $ 11,202 $ - $ - $ 11,202 Assay - 12,926 935,239 - 948,165 Drilling - - 1,577,253 - 1,577,253 Equipment rental - 1,466 232,808 - 234,274 Field costs 2,027 9,218 317,575 337 329,157 Geological/ Geophysical 4,201 1,984 1,009,824 29,599 1,045,608 Land maintenance & tenure 11,023 77,972 263,754 27,331 380,080 Permits - - 1,700 - 1,700 Studies - - 920,301 - 920,301 Transportation - - - 1,130 1,130 Travel - 5,133 185,494 1,423 192,050 Total expenditures for the year $ 17,251 $ 119,901 $ 5,443,948 $ 59,820 $ 5,640,920

SHARE CAPITAL (Tables)

SHARE CAPITAL (Tables)	12 Months Ended
	May 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	A summary of the status of the stock option plan as of May 31, 2016, and 2015, and changes during the years are presented below: 2016 2015 Number of Weighted Number of Weighted Balance, beginning of the year 7,396,334 $ 0.94 6,175,234 $ 0.84 Granted 1,650,000 0.48 1,575,000 1.34 Exercised (245,334) (0.50) (18,900) (0.50) Forfeited (820,000) (0.94) - - Expired - - (335,000) (1.00) Balance, end of the year 7,981,000 $ 0.85 7,396,334 $ 0.94
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Stock options outstanding are as follows: 2016 2015 Expiry Date Exercise Number Exercisable Exercise Number of Exercisable July 29, 2016 (Note 14a)) $ 0.50 219,100 219,100 $ 0.50 464,434 464,434 November 17, 2016 $ 0.67 210,000 210,000 $ 0.67 210,000 210,000 January 23, 2017 $ 1.10 50,000 50,000 $ 1.10 50,000 25,000 May 1, 2017 $ 0.73 50,000 50,000 $ 0.73 50,000 25,000 May 29, 2017 $ 0.92 300,000 300,000 $ 0.92 300,000 300,000 September 19, 2017 $ 0.96 2,016,900 2,016,900 $ 0.96 2,436,900 2,436,900 October 29, 2017 $ 0.96 100,000 100,000 $ 0.96 100,000 100,000 August 16, 2018 $ 0.76 2,120,000 2,120,000 $ 0.76 2,420,000 1,611,720 September 8, 2019 $ 1.40 1,265,000 842,490 $ 1.40 1,365,000 454,545 September 9, 2020 $ 0.46 640,000 213,120 $ - - - November 13, 2020 $ 0.49 1,010,000 336,330 $ - - - 7,981,000 6,457,940 7,396,334 5,627,599
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The Company uses the fair value method for determining stock-based compensation for all options granted during the years. The fair value of options granted was $ 420,866 1,109,011 For the year ended May 31, 2016 2015 Risk-free interest rate 0.88 % 1.50 % Expected life of options 5 years 4.62 years Annualized volatility 72.33 % 69.21 % Dividend yield 0 % 0.0 % Exercise price $ 0.48 $ 1.34 Fair value per share $ 0.26 $ 0.70
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Stock-based compensation has been allocated to the same expenses as cash compensation paid to the same employees or consultants, as follows: For the year ended May 31, 2016 2015 Consulting fees $ 415,360 $ 570,913 Exploration expenditures – Geological/geophysical 18,468 36,820 Investor relations 96,309 208,336 Professional fees 16,678 48,841 Wages and benefits 279,106 620,785 $ 825,921 $ 1,485,695

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	May 31, 2016
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	During the year ended May 31, 2016, the Company entered into the following transactions with related parties: For the year ended May 31, 2016 2015 Consulting fees to CFO $ 105,333 $ 97,000 Wages and benefits to CEO and COO 806,046 620,301 Wages and benefits to former President 234,997 281,592 Directors fees (included in consulting fees) 151,250 122,750 Fees to Vice President of Corporate Communications (included in investor relations) 190,000 180,000 Professional fees to former Vice President - 25,680 Stock-based compensation to related parties 653,520 1,247,408 $ 2,141,146 $ 2,574,731

GEOGRAPHIC SEGMENTED INFORMAT26

GEOGRAPHIC SEGMENTED INFORMATION (Tables)	12 Months Ended
	May 31, 2016
Segment Reporting [Abstract]
Long-lived Assets by Geographic Areas [Table Text Block]	The Company operates in one industry segment, the mineral resources industry, and in two geographical segments, Canada and the United States. All current exploration activities are conducted in the United States and Canada. The significant asset categories identifiable with these geographical areas are as follows: Canada United States Total May 31, 2016 Capitalized acquisition costs $ - $ 4,261,680 $ 4,261,680 Property and equipment $ 8,068 $ 73,983 $ 82,051 May 31, 2015 Capitalized acquisition costs $ - $ 4,866,634 $ 4,866,634 Property and equipment $ 2,840 $ 93,863 $ 96,703 For the year ended May 31, 2016 2015 Net loss for the year – Canada $ (2,118,555) $ (3,126,865) Net loss for the year – United States (5,315,660) (7,450,622) Net loss for the year $ (7,434,215) $ (10,577,487)

SUBSIDIARIES (Tables)

SUBSIDIARIES (Tables)	12 Months Ended
	May 31, 2016
Subsidiaries [Abstract]
Schedule Of Significant Subsidiaries [Table Text Block]	Significant subsidiaries for the years ended May 31, 2016 and 2015 are: Country of Principal The Company’s The Company’s Corvus Gold (USA) Inc. USA Holding company 100 % 100 % Raven Gold Alaska Inc. USA Exploration company 100 % 100 % Corvus Gold Nevada Inc. USA Exploration company 100 % 100 % SoN Land & Water LLC USA Exploration company 100 % 100 %

SUPPLEMENTAL CASH FLOW INFORM28

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
	May 31, 2016
Supplemental Cash Flow Information [Abstract]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	For the year ended May 31, 2016 2015 Supplemental cash flow information Interest paid (received) $ 5,113 $ (11,661) Income taxes paid (received) $ - $ - Non-cash financing and investing transactions Shares issued to acquire mineral properties $ 11,250 $ 64,600 Change in asset retirement obligations included in capitalized acquisition costs $ 153,825 $ 132,579 Reclassification of contributed surplus on exercise of stock options $ 95,748 $ 7,376

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	May 31, 2016
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	A reconciliation of income taxes at statutory rates with the reported taxes is as follows for the years ended May 31: 2016 2015 Loss before income taxes $ (7,434,215) $ (10,577,487) Statutory Canadian corporate tax rate 26.00 % 26.00 % Income tax recovery at statutory rates $ (1,932,896) $ (2,750,147) Stock-based compensation 214,739 386,281 Effect of tax rate change - 775,666 Difference in tax rates in other jurisdictions (422,602) (647,273) Tax benefits not realized 2,140,759 2,235,473 Income tax recovery $ - $ -
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The significant components of the Company’s deferred income tax assets and liabilities are as follows: 2016 2015 Deferred income tax assets (liabilities) Mineral properties $ 15,907,000 $ 13,942,000 Property and equipment 30,000 19,000 Share issuance costs 45,000 56,000 Non-capital losses available for future periods 6,451,000 5,316,000 22,433,000 19,333,000 Valuation allowance (22,433,000) (19,333,000) Net deferred tax assets $ - $ -
Summary of Tax Credit Carryforwards [Table Text Block]	Canada United States 2029 $ - $ 1,253,000 2030 - 2,000 2031 379,000 186,000 2032 1,089,000 1,595,000 2033 1,443,000 2,106,000 2034 1,733,000 4,102,000 2035 1,806,000 1,906,000 2036 1,354,000 1,854,000 $ 7,804,000 $ 13,004,000

NATURE AND CONTINUANCE OF OPE30

NATURE AND CONTINUANCE OF OPERATIONS (Details Textual) - CAD	Jul. 15, 2016	Mar. 11, 2016	Sep. 01, 2015	Feb. 27, 2015	Aug. 27, 2014	May 31, 2016	May 31, 2015
Working Capital						CAD 4,742,321	CAD 4,716,940
Stock Issued During Period, Shares, New Issues		4,900,000		4,500,000
Sale of Stock, Price Per Share		CAD 0.70		CAD 1
Proceeds from Issuance of Private Placement		CAD 3,430,000		CAD 4,500,000
Private Placement [Member]
Stock Issued During Period, Shares, New Issues			4,255,320		5,150,000
Sale of Stock, Price Per Share			CAD 0.47		CAD 1.20
Proceeds from Issuance of Private Placement			CAD 2,000,000		CAD 6,180,000
Private Placement [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	2,550,000
Sale of Stock, Price Per Share	CAD 1.02
Proceeds from Issuance of Private Placement	CAD 2,601,000

SIGNIFICANT ACCOUNTING POLICI31

SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	12 Months Ended
	May 31, 2016USD ($)shares	May 31, 2015USD ($)shares	May 31, 2016CAD	May 31, 2015CAD
SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7,981,000	7,396,334
Asset Retirement Obligations, Noncurrent	$ 224,000	$ 107,000	CAD 293,578	CAD 132,579
Computer Equipment [Member]
SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Property, Plant and Equipment, Depreciation Methods	30% declining balance
Vehicles [Member]
SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Property, Plant and Equipment, Depreciation Methods	30% declining balance
Tent [Member]
SIGNIFICANT ACCOUNTING POLICIES [Line Items]
Property, Plant and Equipment, Depreciation Methods	20% declining balance

FAIR VALUE OF FINANCIAL INSTR32

FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - CAD	May 31, 2016	May 31, 2015
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	CAD 4,783,519	CAD 5,159,962

MARKETABLE SECURITIES (Details

MARKETABLE SECURITIES (Details Textual)	12 Months Ended
	May 31, 2016CAD	May 31, 2015CADshares	May 31, 2014USD ($)
Marketable Securities [Abstract]
Sale of Stock, Number of Shares Issued in Transaction | shares		200,000
Proceeds from Sale and Maturity of Marketable Securities	CAD 0	CAD 35,723	$ 29,058
Marketable Securities, Realized Gain (Loss) | CAD		CAD 125,166

PROPERTY AND EQUIPMENT (Details

PROPERTY AND EQUIPMENT (Details) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Property, Plant and Equipment [Line Items]
Cost, Balance	CAD 205,974	CAD 166,905
Additions	7,153	13,822
Currency translation adjustments	10,742	25,247
Cost, Balance	223,869	205,974
Depreciation, Balance	109,271	69,458
Depreciation for the year	27,100	28,191
Currency translation adjustments	5,447	11,622
Depreciation, Balance	141,818	109,271
Carrying amounts, Balance	82,051	96,703
Carrying amounts, Balance	82,051	96,703
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost, Balance	58,946	38,733
Additions	7,153	13,822
Currency translation adjustments	2,786	6,391
Cost, Balance	68,885	58,946
Depreciation, Balance	32,635	21,978
Depreciation for the year	9,409	7,497
Currency translation adjustments	1,451	3,160
Depreciation, Balance	43,495	32,635
Carrying amounts, Balance	25,390	26,311
Carrying amounts, Balance	25,390	26,311
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Cost, Balance	84,843	73,962
Additions	0	0
Currency translation adjustments	4,591	10,881
Cost, Balance	89,434	84,843
Depreciation, Balance	59,223	42,058
Depreciation for the year	8,171	10,247
Currency translation adjustments	3,135	6,918
Depreciation, Balance	70,529	59,223
Carrying amounts, Balance	18,905	25,620
Carrying amounts, Balance	18,905	25,620
Tent [Member]
Property, Plant and Equipment [Line Items]
Cost, Balance	62,185	54,210
Additions	0	0
Currency translation adjustments	3,365	7,975
Cost, Balance	65,550	62,185
Depreciation, Balance	17,413	5,422
Depreciation for the year	9,520	10,447
Currency translation adjustments	861	1,544
Depreciation, Balance	27,794	17,413
Carrying amounts, Balance	37,756	44,772
Carrying amounts, Balance	CAD 37,756	CAD 44,772

MINERAL PROPERTIES (Details)

MINERAL PROPERTIES (Details) - CAD	Apr. 08, 2015	Nov. 18, 2015	May 31, 2016	May 31, 2015
Beginning Balance			CAD 4,866,634	CAD 4,045,115
Cash payments (note 6d)(ii)(1)			32,594	32,508
Shares issued (note 6d)(ii)(1)	CAD 64,600	CAD 11,250	11,250	64,600
Asset retirement obligations			153,825	132,579
Currency translation adjustments			276,635	591,832
Reclassified to asset held-for-sale			(401,563)
Write-off of capitalized acquisition costs			677,695	0
Ending Balance			4,261,680	4,866,634
Chisna [Member]
Beginning Balance			631,205	550,255
Cash payments (note 6d)(ii)(1)			0	0
Shares issued (note 6d)(ii)(1)			0	0
Asset retirement obligations			0	0
Currency translation adjustments			46,490	80,950
Reclassified to asset held-for-sale			0
Write-off of capitalized acquisition costs			(677,695)
Ending Balance			0	631,205
North Bullfrog [Member]
Beginning Balance			3,861,412	3,168,810
Cash payments (note 6d)(ii)(1)			32,594	32,508
Shares issued (note 6d)(ii)(1)			11,250	64,600
Asset retirement obligations			153,825	132,579
Currency translation adjustments			202,599	462,915
Reclassified to asset held-for-sale			0
Write-off of capitalized acquisition costs			0
Ending Balance			4,261,680	3,861,412
LMS Property [Member]
Beginning Balance			374,017	326,050
Cash payments (note 6d)(ii)(1)			0	0
Shares issued (note 6d)(ii)(1)			0	0
Asset retirement obligations			0	0
Currency translation adjustments			27,546	47,967
Reclassified to asset held-for-sale			(401,563)
Ending Balance			CAD 0	CAD 374,017

MINERAL PROPERTIES (Details 1)

MINERAL PROPERTIES (Details 1) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 3,024,448	CAD 5,640,920
Cost recovery	(168,103)
Costs Incurred for Exploration and Evaluation Activities, Net	2,856,345
West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	181	17,251
Cost recovery	(23,802)
Costs Incurred for Exploration and Evaluation Activities, Net	(23,621)
Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	20,904	119,901
Cost recovery	(39,463)
Costs Incurred for Exploration and Evaluation Activities, Net	(18,559)
North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	2,965,999	5,443,948
Cost recovery	0
Costs Incurred for Exploration and Evaluation Activities, Net	2,965,999
LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	37,364	59,820
Cost recovery	(104,838)
Costs Incurred for Exploration and Evaluation Activities, Net	(67,474)
Aircraft Services [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		11,202
Aircraft Services [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Aircraft Services [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		11,202
Aircraft Services [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Aircraft Services [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Assay [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	757,432	948,165
Assay [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Assay [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	12,926
Assay [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	757,432	935,239
Assay [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	929,841	1,577,253
Drilling [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	929,841	1,577,253
Drilling [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Equipment rental [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	51,347	234,274
Equipment rental [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Equipment rental [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	1,466
Equipment rental [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	51,347	232,808
Equipment rental [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	135,371	329,157
Field Costs [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	181	2,027
Field Costs [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	247	9,218
Field Costs [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	134,382	317,575
Field Costs [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	561	337
Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	336,854	1,045,608
Geological Geophysical [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	4,201
Geological Geophysical [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	6,210	1,984
Geological Geophysical [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	328,740	1,009,824
Geological Geophysical [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	1,904	29,599
Land Maintenance Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	420,229	380,080
Land Maintenance Tenure [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	11,023
Land Maintenance Tenure [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	13,534	77,972
Land Maintenance Tenure [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	373,795	263,754
Land Maintenance Tenure [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	32,900	27,331
Permits [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	632	1,700
Permits [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Permits [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Permits [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	632	1,700
Permits [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Studies [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	322,972	920,301
Studies [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Studies [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Studies [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	322,972	920,301
Studies [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	1,999	1,130
Transportation [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	1,999	1,130
Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	67,771	192,050
Travel [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Travel [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	913	5,133
Travel [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	66,858	185,494
Travel [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 0	CAD 1,423

MINERAL PROPERTIES (Details Tex

MINERAL PROPERTIES (Details Textual) lb in Millions	Mar. 11, 2016shares	Nov. 05, 2015CADshares	Nov. 07, 2014CADshares	Nov. 07, 2012	Dec. 02, 2010shares	Dec. 01, 2010shares	Dec. 01, 2007USD ($)shares	May 08, 2006USD ($)	May 16, 2016USD ($)	Apr. 05, 2016USD ($)	Nov. 18, 2015shares	Jul. 29, 2015USD ($)km²	Jul. 29, 2015CADkm²	Mar. 30, 2015USD ($)	Feb. 27, 2015shares	May 29, 2014USD ($)	Dec. 31, 2013USD ($)a	Dec. 31, 2013CADa	Nov. 25, 2013CADshares	Mar. 28, 2013USD ($)lb$ / USTon-T	Oct. 31, 2012USD ($)shares	Oct. 25, 2012CADshares	Mar. 01, 2011USD ($)	Oct. 27, 2008USD ($)	Jun. 16, 2006USD ($)	May 22, 2006USD ($)	May 31, 2016USD ($)	May 31, 2016CAD	May 31, 2015CAD	May 31, 2013USD ($)	May 31, 2013CAD	May 31, 2012shares	May 31, 2011shares	May 31, 2014shares	May 31, 2016CAD	Mar. 31, 2016USD ($)	Nov. 23, 2015USD ($)	May 31, 2015USD ($)	May 31, 2015CAD	Nov. 17, 2014USD ($)	Nov. 13, 2013USD ($)	May 31, 2013CAD	Nov. 10, 2010USD ($)	Mar. 24, 2010ha
Royalty Percentage																								1.00%
Capital Lease Obligations																					$ 10,000
Payments to Acquire Mineral Rights | CAD																												CAD 32,594	CAD 32,508
Asset Retirement Obligations, Noncurrent																											$ 224,000								CAD 293,578			$ 107,000	CAD 132,579
Stock Issued During Period, Shares, New Issues | shares	4,900,000														4,500,000
Fifth Year Lease [Member]
Lease Payments Common Shares Issued | shares																					50,000
Fifth Through Ninth Year Lease [Member]
Capital Lease Obligations																					$ 10,000
Lease Payments Additional Common Shares Issued | shares																					50,000
Corvus Nevada [Member]
Royalty Percentage																							1.00%
Mining Lease Agreement Term Of Contract																							10 years
Purchase Obligation		CAD 19,237																					$ 1,000,000
Royalty Expense																							$ 2,000,000
Capital Lease Obligations							$ 5,000												CAD 35,871			CAD 126,924															$ 10,000			$ 10,000	$ 10,000		$ 108,750
Lease Payments Common Shares Issued | shares							25,000																									25,000	10,000	85,000
Common Stock Issued During Period, Shares, Issued for Lease Payments | shares					46,250		20,000
Lease Payments Additional Common Value Issued							$ 5,000
Purchase Agreement Payable																				$ 160,000
Cash | CAD																																										CAD 157,408
Notes Payable																				$ 240,000										$ 240,000												CAD 248,832
Debt Instrument, Interest Rate, Effective Percentage																				4.77%
Acquisition Costs, Period Cost																														$ 400,000	CAD 406,240
Price Per Ton of Overburden to be Stored on the Property | $ / USTon-T																				0.02
Minimum Storage Capacity of the Property | lb																				12
Advances and Royalty Guarantees, Commitments																											The lease includes a 4% NSR royalty on production, with an option to purchase the royalty for USD 500,000 per 1% or USD 2,000,000 for the entire 4% royalty. The lease also includes the option to purchase the property for USD 300,000.	The lease includes a 4% NSR royalty on production, with an option to purchase the royalty for USD 500,000 per 1% or USD 2,000,000 for the entire 4% royalty. The lease also includes the option to purchase the property for USD 300,000.
Corvus Nevada [Member] | Royalty Of Two Percentage [Member]
Production Royalty Per Ounce																											$ 400
Royalty Percentage																											2.00%								2.00%
Corvus Nevada [Member] | Royalty Of Three Percentage [Member]
Royalty Percentage																											3.00%								3.00%
Corvus Nevada [Member] | Royalty Of Four Percentage [Member]
Production Royalty Per Ounce																											$ 500
Royalty Percentage																											0.00%								0.00%
Corvus Nevada [Member] | Fourth Through Sixth Year Lease [Member]
Other Commitment																											$ 200,000
Corvus Nevada [Member] | Seventh Through Tenth Year Lease [Member]
Other Commitment																											300,000
Corvus Nevada [Member] | First Through Third Year Lease [Member]
Other Commitment																											$ 100,000
Stock Issued During Period, Shares, New Issues | shares											25,000
Lunar Landing, LLC [Member]
Lease Term														3 years
Additional Lease Term														7 years
Advance Royalties														$ 5,000																						$ 5,000
Ahtna [Member] | Raven Gold [Member]
Land Subject to Ground Leases | ha																																												26,516
International Tower Hill Mines [Member]
Lease Payments Common Shares Issued | shares		50,000
International Tower Hill Mines [Member] | Corvus Nevada [Member]
Lease Payments Common Shares Issued | shares			50,000																50,000			50,000
Lease Payments Additional Common Shares Issued | shares						20,000
Lease Payments Additional Common Value Issued | CAD			CAD 21,200
Chisna [Member]
Unpatented Mineral Claims				100.00%																							100.00%	100.00%
Proceeds From Sale Of Mineral Properties										$ 25,000
Payments to Acquire Mineral Rights | CAD																												CAD 0	0
Chisna [Member] | Royalty Of One Percentage [Member]
Royalty Percentage										1.00%
Chisna [Member] | Royalty Of Other One Percentage [Member]
Royalty Percentage										1.00%
North Bullfrog [Member]
Unpatented Mineral Claims																											100.00%	100.00%
Land Subject to Ground Leases | a																	1,600	1,600
Royalty Percentage								1.00%	1.00%																1.00%	1.00%
Mining Lease Agreement Term Of Contract								10 years	10 years																10 years
Purchase Obligation								$ 1,000,000	$ 1,000,000																$ 1,000,000	$ 1,000,000
Royalty Expense								$ 2,000,000	$ 4,000,000																$ 2,000,000	$ 2,000,000
Advance Royalties							$ 100,000
Payments to Acquire Mineral Rights | CAD																												CAD 32,594	32,508
North Bullfrog [Member] | Nevada Corporation [Member]
Royalty Percentage								1.00%								1.00%
Purchase Obligation								$ 850,000								$ 770,000
Royalty Expense								$ 2,550,000								$ 2,310,000
North Bullfrog [Member] | Redstar Gold Corp [Member]
Purchase Obligation																								$ 1,000,000
West Pogo [Member]
Unpatented Mineral Claims																											100.00%	100.00%
West Pogo [Member] | Royalty Of Three Percentage [Member]
Royalty Percentage												3.00%	3.00%
West Pogo [Member] | Royalty Of One Percentage [Member]
Royalty Percentage												1.00%	1.00%
West Pogo [Member] | Royalty Of Other One Percentage [Member]
Royalty Percentage												1.00%	1.00%
Payments to Acquire Mineral Rights												$ 2,000,000
West Pogo [Member] | Royalty Of Additional One Percentage [Member]
Royalty Percentage												1.00%	1.00%
Payments to Acquire Mineral Rights												$ 5,000,000
West Pogo [Member] | Raven Gold [Member]
Proceeds From Sale Of Mineral Properties												20,000	CAD 25,728
LMS Property [Member]
Unpatented Mineral Claims																											100.00%	100.00%
Proceeds From Sale Of Mineral Properties																											$ 350,000	CAD 473,585
Payments to Acquire Mineral Rights | CAD																												CAD 0	CAD 0
Proceeds from Royalties Received																											$ 4,000,000
LMS Property [Member] | Royalty Of Three Percentage [Member]
Royalty Percentage																											3.00%								3.00%
LMS Property [Member] | Royalty Of One Percentage [Member]
Royalty Percentage																											1.00%								1.00%
LMS Property [Member] | Royalty Of Other One Percentage [Member]
Royalty Percentage																											1.00%								1.00%
Land and Water Rights [Member]
Payments to Acquire Mineral Rights																	$ 1,034,626	CAD 1,100,118
Maximum [Member] | Corvus Nevada [Member] | Royalty Of Three Percentage [Member]
Production Royalty Per Ounce																											$ 500
Minimum [Member] | Corvus Nevada [Member] | Royalty Of Three Percentage [Member]
Production Royalty Per Ounce																											$ 401
NSR [Member]
Royalty Percentage																								4.00%
NSR [Member] | Royalty Of Two Percentage [Member]
Royalty Percentage																										2.00%
NSR [Member] | Corvus Nevada [Member]
Royalty Percentage																							2.00%
NSR [Member] | Nevada Corporation [Member]
Royalty Percentage								3.00%								3.00%
NSR [Member] | North Bullfrog [Member]
Royalty Percentage									4.00%
NSR [Member] | North Bullfrog [Member] | Royalty Of Two Percentage [Member]
Royalty Percentage																									2.00%
Royalty Agreements [Member] | Corvus Nevada [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																							$ 20,000
Capital Leases, Future Minimum Payments Due in Three Years																							25,000
Capital Leases, Future Minimum Payments Due Thereafter																							$ 30,000
Royalty Agreements [Member] | North Bullfrog [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year								$ 4,000	$ 20,500							$ 2,400									$ 2,000	$ 8,000
Capital Leases, Future Minimum Payments Due in Three Years								3,500								2,400									2,000	4,800
Capital Leases, Future Minimum Payments Due Thereafter								4,500	$ 20,000							$ 3,600									$ 3,000	$ 7,200
Royalty Agreements [Member] | North Bullfrog [Member] | Nevada Corporation [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year								2,000
Capital Leases, Future Minimum Payments Due in Three Years								2,000
Capital Leases, Future Minimum Payments Due Thereafter								$ 3,000
Royalty Agreements [Member] | North Bullfrog [Member] | Redstar Gold Corp [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																								$ 10,800
Capital Leases, Future Minimum Payments Due in Three Years																								10,800
Capital Leases, Future Minimum Payments Due Thereafter																								16,200
Purchase Obligation																								1,250,000
Royalty Expense																								$ 5,000,000
Royalty Agreements [Member] | NSR [Member] | North Bullfrog [Member]
Royalty Percentage								2.00%
Good Paster Database [Member] | Raven Gold [Member]
Proceeds From Sale Of Mineral Properties												$ 100,000	CAD 136,058
Good Paster Database [Member] | West Pogo [Member] | Royalty Of One Percentage [Member]
Land Subject to Ground Leases | km²												1,500	1,500
Royalty Percentage												1.00%	1.00%
Proceeds From Sale Of Mineral Properties												$ 2,000,000

PROMISSORY NOTE PAYABLE (Detail

PROMISSORY NOTE PAYABLE (Details Textual) - Promissory Note Payable [Member]	Mar. 28, 2013USD ($)
Debt Instrument [Line Items]
Notes Payable, Noncurrent	$ 240,000
Debt Instrument, Interest Rate, Stated Percentage	4.77%

SHARE CAPITAL (Details)

SHARE CAPITAL (Details) - CAD / shares	1 Months Ended	12 Months Ended
	Jun. 22, 2016	May 31, 2016	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Granted	50,000
Weighted Average Exercise Price, Balance, end of the year	CAD 1.02
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Balance, beginning of the year	7,981,000	7,396,334	6,175,234
Number of Options, Granted		1,650,000	1,575,000
Number of Options, Exercised		(245,334)	(18,900)
Number of Options, Forfeited		(820,000)	0
Number of Options, Expired		0	(335,000)
Number of Options, Balnce, end of the year		7,981,000	7,396,334
Weighted Average Exercise Price, Balance, beginning of the year	CAD 0.85	CAD 0.94	CAD 0.84
Weighted Average Exercise Price, Granted		0.48	1.34
Weighted Average Exercise Price, Exercised		(0.50)	(0.50)
Weighted Average Exercise Price, Forfeited		(0.94)	0
Weighted Average Exercise Price, Expired		0	(1)
Weighted Average Exercise Price, Balance, end of the year		CAD 0.85	CAD 0.94

SHARE CAPITAL (Details 1)

SHARE CAPITAL (Details 1) - CAD / shares	Jun. 22, 2016	May 31, 2016	May 31, 2015	May 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	CAD 1.02
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.85	CAD 0.94	CAD 0.84
Number of Options		7,981,000	7,396,334	6,175,234
Exercisable at Year- End		6,457,940	5,627,599
July 29, 2016 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.5	CAD 0.5
Number of Options		219,100	464,434
Exercisable at Year- End		219,100	464,434
November 17, 2016 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.67	CAD 0.67
Number of Options		210,000	210,000
Exercisable at Year- End		210,000	210,000
January 23, 2017 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 1.1	CAD 1.1
Number of Options		50,000	50,000
Exercisable at Year- End		50,000	25,000
May 1, 2017 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.73	CAD 0.73
Number of Options		50,000	50,000
Exercisable at Year- End		50,000	25,000
May 29, 2017 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.92	CAD 0.92
Number of Options		300,000	300,000
Exercisable at Year- End		300,000	300,000
September 19, 2017 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.96	CAD 0.96
Number of Options		2,016,900	2,436,900
Exercisable at Year- End		2,016,900	2,436,900
October 29, 2017 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.96	CAD 0.96
Number of Options		100,000	100,000
Exercisable at Year- End		100,000	100,000
August 16, 2018 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.76	CAD 0.76
Number of Options		2,120,000	2,420,000
Exercisable at Year- End		2,120,000	1,611,720
September 8, 2019 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 1.4	CAD 1.4
Number of Options		1,265,000	1,365,000
Exercisable at Year- End		842,490	454,545
September 9, 2020 [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.46	CAD 0
Number of Options		640,000	0
Exercisable at Year- End		213,120	0
November 13, 2020 | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price		CAD 0.49	CAD 0
Number of Options		1,010,000	0
Exercisable at Year- End		336,330	0

SHARE CAPITAL (Details 2)

SHARE CAPITAL (Details 2) - CAD / shares	12 Months Ended
	May 31, 2016	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.88%	1.50%
Expected life of options	5 years	4 years 7 months 13 days
Annualized volatility	72.33%	69.21%
Dividend yield	0.00%	0.00%
Exercise price	CAD 0.48	CAD 1.34
Fair value per share	CAD 0.26	CAD 0.7

SHARE CAPITAL (Details 3)

SHARE CAPITAL (Details 3) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	CAD 825,921	CAD 1,485,695
Consulting fees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	415,360	570,913
Exploration expenditures - Geological/geophysical [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	18,468	36,820
Investor relations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	96,309	208,336
Professional Fees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	16,678	48,841
Wages and benefits [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	CAD 279,106	CAD 620,785

SHARE CAPITAL (Details Textual)

SHARE CAPITAL (Details Textual) - CAD	Mar. 11, 2016	Sep. 01, 2015	Apr. 08, 2015	Nov. 18, 2015	Feb. 27, 2015	Aug. 27, 2014	May 31, 2016	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock Issued During Period, Shares, New Issues	4,900,000				4,500,000
Sale of Stock, Price Per Share	CAD 0.70				CAD 1
Proceeds from Issuance of Private Placement	CAD 3,430,000				CAD 4,500,000
Payments of Stock Issuance Costs	CAD 12,483			CAD 5,021	CAD 17,810		CAD 25,884	CAD 207,977
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term							2 years 5 months 1 day	2 years 10 months 6 days
Share Based Compensation Arrangement by Share Based Payment Award Options Grant in Period, Fair Value							CAD 420,866	CAD 1,109,011
Stock Issued During Period, Value, Stock Options Exercised							122,667	9,450
Stock Issued During Period, Shares, Acquisitions			85,000	25,000
Stock Issued During Period, Value, Acquisitions			CAD 64,600	CAD 11,250			CAD 11,250	CAD 64,600
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock Issued During Period, Shares, Other							245,334	18,900
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period							245,334	18,900
Stock Issued During Period, Value, Stock Options Exercised							CAD 122,667	CAD 9,450
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum							10.00%
Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock Issued During Period, Shares, New Issues		4,255,320				5,150,000
Sale of Stock, Price Per Share		CAD 0.47				CAD 1.20
Proceeds from Issuance of Private Placement		CAD 2,000,000				CAD 6,180,000
Payments of Stock Issuance Costs		CAD 8,380				CAD 190,167

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Related Party Transaction [Line Items]
Consulting fees	CAD 712,943	CAD 827,163
Professional fees	320,979	505,239
Management compensation	2,141,146	2,574,731
Related Party Transaction [Member]
Related Party Transaction [Line Items]
Stock-based compensation to related parties	653,520	1,247,408
Chief Financial Officer [Member] | Related Party Transaction [Member]
Related Party Transaction [Line Items]
Consulting fees	105,333	97,000
Chief Executive Officer [Member] | Related Party Transaction [Member]
Related Party Transaction [Line Items]
Wages and benefits	806,046	620,301
President [Member] | Related Party Transaction [Member]
Related Party Transaction [Line Items]
Wages and benefits	234,997	281,592
Director [Member] | Related Party Transaction [Member]
Related Party Transaction [Line Items]
Directors fees (included in consulting fees)	151,250	122,750
Vice President [Member] | Related Party Transaction [Member]
Related Party Transaction [Line Items]
Fees to Vice President of Corporate Communications (included in investor relations)	190,000	180,000
Professional fees	CAD 0	CAD 25,680

RELATED PARTY TRANSACTIONS (D45

RELATED PARTY TRANSACTIONS (Details Textual) - CAD	Jun. 01, 2011	May 31, 2016	May 31, 2015
Related Party Transaction [Line Items]
Accounts Payable and Accrued Liabilities		CAD 7,628	CAD 9,880
Legal Fees	CAD 72,000
Due to Other Related Parties, Classified, Current			CAD 73,830

GEOGRAPHIC SEGMENTED INFORMAT46

GEOGRAPHIC SEGMENTED INFORMATION (Details) - CAD	May 31, 2016	May 31, 2015	May 31, 2014
Segment Reporting Information [Line Items]
Capitalized acquisition costs	CAD 4,261,680	CAD 4,866,634	CAD 4,045,115
Property and equipment	82,051	96,703
CANADA
Segment Reporting Information [Line Items]
Capitalized acquisition costs	0	0
Property and equipment	8,068	2,840
UNITED STATES
Segment Reporting Information [Line Items]
Capitalized acquisition costs	4,261,680	4,866,634
Property and equipment	CAD 73,983	CAD 93,863

GEOGRAPHIC SEGMENTED INFORMAT47

GEOGRAPHIC SEGMENTED INFORMATION (Details 1) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Segment Reporting Information [Line Items]
Net loss for the year	CAD (7,434,215)	CAD (10,577,487)
UNITED STATES
Segment Reporting Information [Line Items]
Net loss for the year	(5,315,660)	(7,450,622)
CANADA
Segment Reporting Information [Line Items]
Net loss for the year	CAD (2,118,555)	CAD (3,126,865)

SUBSIDIARIES (Details)

SUBSIDIARIES (Details)	12 Months Ended
	May 31, 2016	May 31, 2015
Corvus Gold (USA) Inc [Member]
Subsidiary or Equity Method Investee [Line Items]
Country of Incorporation	USA
Principal Activity	Holding company
Effective interest	100.00%	100.00%
Raven Gold Alaska Inc [Member]
Subsidiary or Equity Method Investee [Line Items]
Country of Incorporation	USA
Principal Activity	Exploration company
Effective interest	100.00%	100.00%
Corvus Gold Nevada Inc [Member]
Subsidiary or Equity Method Investee [Line Items]
Country of Incorporation	USA
Principal Activity	Exploration company
Effective interest	100.00%	100.00%
SoN Land & Water LLC [Member]
Subsidiary or Equity Method Investee [Line Items]
Country of Incorporation	USA
Principal Activity	Exploration company
Effective interest	100.00%	100.00%

SUPPLEMENTAL CASH FLOW INFORM49

SUPPLEMENTAL CASH FLOW INFORMATION (Details) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Supplemental cash flow information
Interest paid (received)	CAD 5,113	CAD (11,661)
Income taxes paid (received)	0	0
Non-cash financing and investing transactions
Shares issued to acquire mineral properties	11,250	64,600
Change in asset retirement obligations included in capitalized acquisition costs	153,825	132,579
Reclassification of contributed surplus on exercise of stock options	CAD 95,748	CAD 7,376

INCOME TAXES (Details)

INCOME TAXES (Details) - CAD	12 Months Ended
	May 31, 2016	May 31, 2015
Loss before income taxes	CAD (7,434,215)	CAD (10,577,487)
Statutory Canadian corporate tax rate	26.00%	26.00%
Income tax recovery at statutory rates	CAD (1,932,896)	CAD (2,750,147)
Stock-based compensation	214,739	386,281
Effect of tax rate change	0	775,666
Difference in tax rates in other jurisdictions	(422,602)	(647,273)
Tax benefits not realized	2,140,759	2,235,473
Income tax recovery	CAD 0	CAD 0

INCOME TAXES (Details 1)

INCOME TAXES (Details 1) - CAD	May 31, 2016	May 31, 2015
Deferred income tax assets (liabilities)
Mineral properties	CAD 15,907,000	CAD 13,942,000
Property and equipment	30,000	19,000
Share issuance costs	45,000	56,000
Non-capital losses available for future periods	6,451,000	5,316,000
Deferred Tax Assets, Gross	22,433,000	19,333,000
Valuation allowance	(22,433,000)	(19,333,000)
Net deferred tax assets	CAD 0	CAD 0

INCOME TAXES (Details 2)

INCOME TAXES (Details 2)	12 Months Ended
	May 31, 2016CAD
Tax Year 2029 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2029
Tax Year 2030 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2030
Tax Year 2031 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2031
Tax Year 2032 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2032
Tax Year 2033 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2033
Tax Year 2034 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2034
Tax Year 2035 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2035
Tax Year 2036 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2036
CANADA
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	CAD 7,804,000
CANADA | Tax Year 2029 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	0
CANADA | Tax Year 2030 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	0
CANADA | Tax Year 2031 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	379,000
CANADA | Tax Year 2032 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,089,000
CANADA | Tax Year 2033 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,443,000
CANADA | Tax Year 2034 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,733,000
CANADA | Tax Year 2035 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,806,000
CANADA | Tax Year 2036 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,354,000
UNITED STATES
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	13,004,000
UNITED STATES | Tax Year 2029 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,253,000
UNITED STATES | Tax Year 2030 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	2,000
UNITED STATES | Tax Year 2031 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	186,000
UNITED STATES | Tax Year 2032 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,595,000
UNITED STATES | Tax Year 2033 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	2,106,000
UNITED STATES | Tax Year 2034 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	4,102,000
UNITED STATES | Tax Year 2035 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	1,906,000
UNITED STATES | Tax Year 2036 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	CAD 1,854,000

INCOME TAXES (Details Textual)

INCOME TAXES (Details Textual)	12 Months Ended
	May 31, 2016CAD
UNITED STATES
Exploration Expense, Mining	CAD 50,526,000
Operating Loss Carryforwards	13,004,000
CANADA
Exploration Expense, Mining	333,000
Operating Loss Carryforwards	CAD 7,804,000

SUBSEQUENT EVENTS (Details Text

SUBSEQUENT EVENTS (Details Textual) - CAD	Jul. 15, 2016	Jun. 10, 2016	Mar. 11, 2016	Sep. 01, 2015	Jun. 22, 2016	Feb. 27, 2015	Aug. 27, 2014	May 31, 2016	May 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					50,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price					CAD 1.02
Stock Issued During Period, Shares, New Issues			4,900,000			4,500,000
Proceeds from Issuance of Private Placement			CAD 3,430,000			CAD 4,500,000
Stock Issued During Period, Value, Stock Options Exercised								CAD 122,667	CAD 9,450
Sale of Stock, Price Per Share			CAD 0.70			CAD 1
June 22, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.30%
June 22, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.40%
December 22, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.30%
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period								245,334	18,900
Stock Issued During Period, Shares, Other								245,334	18,900
Stock Issued During Period, Value, Stock Options Exercised								CAD 122,667	CAD 9,450
Private Placement [Member]
Stock Issued During Period, Shares, New Issues				4,255,320			5,150,000
Proceeds from Issuance of Private Placement				CAD 2,000,000			CAD 6,180,000
Sale of Stock, Price Per Share				CAD 0.47			CAD 1.20
Subsequent Event [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		200,000
Stock Issued During Period, Shares, Other		200,000
Stock Issued During Period, Value, Stock Options Exercised		CAD 100,000
Subsequent Event [Member] | Private Placement [Member]
Stock Issued During Period, Shares, New Issues	2,550,000
Proceeds from Issuance of Private Placement	CAD 2,601,000
Sale of Stock, Price Per Share	CAD 1.02