Corvus Gold ULC (KOR) 10-K 30 Jun 17 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	May 31, 2017	Jun. 29, 2017	Nov. 30, 2016
Document Information [Line Items]
Entity Registrant Name	Corvus Gold Inc.
Entity Central Index Key	1,507,964
Trading Symbol	corvf
Current Fiscal Year End Date	--05-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		93,369,582
Entity Public Float			$ 40,168,119
Document Type	10-K
Document Period End Date	May 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets	May 31, 2017CAD	May 31, 2016CAD
Current assets
Cash and cash equivalents	CAD 1,300,553	CAD 4,783,519
Accounts receivable	13,524	28,810
Prepaid expenses	249,176	166,853
Total current assets	1,563,253	4,979,182
Property and equipment (note 4)	69,529	82,051
Capitalized acquisition costs (note 5)	4,527,740	4,261,680
Total assets	6,160,522	9,322,913
Current liabilities
Accounts payable and accrued liabilities (note 7)	293,085	236,861
Total current liabilities	293,085	236,861
Asset retirement obligations (note 5)	340,176	293,578
Total liabilities	633,261	530,439
Shareholders’ equity
Share capital (note 6)	72,670,170	69,890,670
Contributed surplus (note 6)	12,480,784	11,977,459
Accumulated other comprehensive income - cumulative translation differences	1,348,070	1,168,386
Deficit accumulated during the exploration stage	(80,971,763)	(74,244,041)
Total shareholders’ equity	5,527,261	8,792,474
Total liabilities and shareholders’ equity	CAD 6,160,522	CAD 9,322,913

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Loss - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Operating expenses
Administration	CAD 649	CAD 7,988
Consulting fees (notes 6 and 7)	635,152	712,943
Depreciation (note 4)	22,176	27,100
Exploration expenditures (notes 5 and 6)	3,145,589	2,856,345
Insurance	156,940	122,691
Investor relations (notes 6 and 7)	768,098	738,931
Office and miscellaneous	118,161	138,882
Professional fees (note 6)	286,556	320,979
Regulatory	77,155	92,941
Rent	109,201	117,471
Travel	154,391	123,621
Wages and benefits (notes 6 and 7)	1,256,749	1,744,818
Total operating expenses	(6,730,817)	(7,004,710)
Other income (expense)
Interest income	26,501	16,399
Gain on sale of capitalized acquisition costs (notes 5b) and 5c))		92,397
Write-off of capitalized acquisition costs (note 5a))		(677,695)
Foreign exchange gain (loss)	(23,406)	139,394
Total other income (expense)	3,095	(429,505)
Net loss for the year	(6,727,722)	(7,434,215)
Other comprehensive income
Exchange difference on translating foreign operations	179,684	315,037
Comprehensive loss for the year	CAD (6,548,038)	CAD (7,119,178)
Basic and diluted net loss per share (in CAD per share)	CAD (0.07)	CAD (0.09)
Weighted average number of shares outstanding (in shares)	92,045,609	84,468,690

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Operating activities
Net loss for the year	CAD (6,727,722)	CAD (7,434,215)
Add items not affecting cash:
Depreciation	22,176	27,100
Stock-based compensation (note 6)	581,379	825,921
Write-off of capitalized acquisition costs (note 5a))		677,695
Gain on sale of capitalized acquisition costs (notes 5b) and 5c))		(92,397)
Foreign exchange (gain) loss	23,406	(139,394)
Changes in non-cash items:
Accounts receivable	15,286	(2,795)
Prepaid expenses	(82,323)	81,826
Accounts payable and accrued liabilities	56,224	(182,367)
Cash used in operating activities	(6,111,574)	(6,238,626)
Financing activities
Cash received from issuance of shares	2,701,000	5,552,667
Share issuance costs	(17,554)	(25,884)
Repayment of promissory note	0	(298,488)
Cash provided by financing activities	2,683,446	5,228,295
Investing activities
Expenditures on property and equipment	(7,739)	(7,153)
Cash received from sale of capitalized acquisition costs (notes 5b) and 5c))		499,313
Capitalized acquisition costs	(66,876)	(32,594)
Cash provided by investing activities	(74,615)	459,566
Effect of foreign exchange on cash	19,777	174,322
Decrease in cash and cash equivalents	(3,482,966)	(376,443)
Cash and cash equivalents, beginning of the year	4,783,519	5,159,962
Cash and cash equivalents, end of the year	CAD 1,300,553	CAD 4,783,519

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - CAD	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at May. 31, 2015	80,168,928
Balance at May. 31, 2015	CAD 64,256,889	CAD 11,247,286	CAD 853,349	CAD (66,809,826)	CAD 9,547,698
Net loss for the year				(7,434,215)	(7,434,215)
Private placement (in shares)	9,155,320
Private placement	CAD 5,430,000				CAD 5,430,000
Exercise of stock options (in shares)	245,334				245,334
Exercise of stock options	CAD 122,667				CAD 122,667
Share issued for capitalized acquisition costs (in shares)	25,000
Share issued for capitalized acquisition costs	CAD 11,250				11,250	[1]
Exchange difference on translating foreign operations			315,037		315,037
Share issuance costs	(25,884)				(25,884)
Reclassification of contributed surplus on exercise of stock options	CAD 95,748	(95,748)
Stock-based compensation		825,921			825,921
Balance (in shares) at May. 31, 2016	89,594,582
Balance at May. 31, 2016	CAD 69,890,670	11,977,459	1,168,386	(74,244,041)	8,792,474
Net loss for the year				(6,727,722)	(6,727,722)
Private placement (in shares)	2,550,000
Private placement	CAD 2,601,000				CAD 2,601,000
Exercise of stock options (in shares)	200,000				200,000
Exercise of stock options	CAD 100,000				CAD 100,000
Share issued for capitalized acquisition costs (in shares)	25,000
Share issued for capitalized acquisition costs	CAD 18,000				18,000	[1]
Exchange difference on translating foreign operations			179,684		179,684
Share issuance costs	(17,554)				(17,554)
Reclassification of contributed surplus on exercise of stock options	78,054	(78,054)
Stock-based compensation		581,379			581,379
Balance (in shares) at May. 31, 2017	92,369,582
Balance at May. 31, 2017	CAD 72,670,170	CAD 12,480,784	CAD 1,348,070	CAD (80,971,763)	CAD 5,527,261
[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: Initial term of five years, commencing December 1, 2007, with the option to extend the lease for an additional five years. The lease will continue for as long thereafter as the property is in commercial production or, alternatively, for an additional three years if Corvus Nevada makes advance minimum royalty payments of USD 100,000 per year (which are recoupable against actual production royalties). - Lease Payments: USD 5,000 (paid) and 25,000 common shares of ITH (delivered) following regulatory acceptance of the transaction; and an additional USD 5,000 and 20,000 common shares on each of the first through fourth lease anniversaries (paid and issued). Pursuant to an agreement with the lessors, in lieu of the 20,000 ITH shares due December 1, 2010, Corvus Nevada paid USD 108,750 on November 10, 2010 and delivered 46,250 common shares of the Company on December 2, 2010. If Corvus Nevada elects to extend the lease for a second five-year term, it will pay USD 10,000 and deliver 50,000 common shares of ITH upon election being made, and an additional 50,000 common shares of ITH on each of the fifth through ninth anniversaries (USD 10,000 paid on October 31, 2012 and 50,000 common shares of ITH delivered on October 25, 2012 paid with cash of $126,924; USD 10,000 paid on November 13, 2013 and 50,000 common shares of ITH delivered on November 25, 2013 paid with cash of $35,871; USD 10,000 paid on November 17, 2014 and 50,000 common shares of ITH delivered on November 7, 2014 paid with cash of $21,200; USD 10,000 paid on November 23, 2015 and 50,000 common shares of ITH delivered on November 5, 2015 paid with cash of $19,237; and USD 10,000 paid on November 17, 2016 and 50,000 common shares of ITH, purchased for $53,447 in the market by the Company, were delivered on November 10, 2016). - Anti-Dilution: Pursuant to an amended agreement agreed to by the lessors in March 2015, the Company shall deliver a total of 85,000 common shares (issued) of the Company for the years 2011 to 2014 (2011: 10,000 common shares; 2012 to 2014: 25,000 common shares each year). All future payments will be satisfied by the delivery of an additional 1/2 common shares of the Company for each of the ITH shares due per the original agreement (issued 25,000 shares of the Company on November 18, 2015 and 25,000 shares of the Company on November 18, 2016). - Work Commitments: USD 100,000 per year for the first three years (incurred), USD 200,000 per year for the years 4 - 6 (incurred) and USD 300,000 for the years 7 - 10 (incurred). Excess expenditures in any year may be carried forward. If Corvus Nevada does not incur the required expenditures in year one, the deficiency is required to be paid to the lessors. - Retained Royalty: Corvus Nevada will pay the lessors a NSR royalty of 2% if the average gold price is USD 400 per ounce or less, 3% if the average gold price is between USD 401 and USD 500 per ounce and 4% if the average gold price is greater than USD 500 per ounce.

Note 1 - Nature and Continuance

Note 1 - Nature and Continuance of Operations	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Nature of Operations [Text Block]	1. NATURE AND CONTINUANCE OF OPERATIONS On August 25, 2010, The Company was incorporated on April 13, 2010 June 1, 2006. 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, 2017, The business of mining and exploration involves a high degree of risk and there can be no no not 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 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, 2017, $1,270,168 $4,742,321 May 31, 2016. not 12 The Company expects that it will need to raise substantial additional capital to accomplish its business plan over the next several years. There is no not not These consolidated financial statements do not

Note 2 - Significant Accounting

Note 2 - Significant Accounting Policies	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2. SIGNIFICANT ACCOUNTING POLICIES Basis of presentation These consolidated financial statements are presented in Canadian dollars and have been prepared in accordance with generally accepted accounting principles in the United States (“US GAAP”). 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. Significant judgments, estimates and assumptions 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 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 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. · 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. using the currency of the primary economic environment in which each of the parent company and its subsidiaries operates. · 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 three 30 no 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 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 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 expenditures 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% Vehicles - 30% Tent - 20% Additions during the year are depreciated at one Depreciation methods, useful lives and residual values are reviewed at each financial year-end and adjusted if appropriate. 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. Impairment of long-lived assets The Company assesses long-lived assets for impairment or when facts and circumstances suggest that the carrying amount of an asset may not, not 50%. 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 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, 2017, $340,176 252,000 2016 $293,578 224,000 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 not 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. 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 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 contributed surplus. Upon exercise of the warrants, the related fair value is reallocated to share capital. 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, 2017, 8,846,900 2016 7,981,000 not Stock-based compensation The Company follows the provisions of Financial Accounting Standards Board Accounting Standards Codification Section 718 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. 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 is not

Note 3 - Fair Value of Financia

Note 3 - Fair Value of Financial Instruments	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Fair Value Disclosures [Text Block]	3. FAIR VALUE OF FINANCIAL INSTRUMENTS Financial instruments recorded at fair value 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 Level 3 – valuation techniques using inputs for the asset or liability that are not 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. The following table presents the financial instruments recorded at fair value, classified using the fair value hierarchy described above: May 31, 2017 Level 1 Cash and cash equivalents $ 1,300,553 May 31, 2016 Level 1 Cash and cash equivalents $ 4,783,519

Note 4 - Property and Equipment

Note 4 - Property and Equipment	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	4. PROPERTY AND EQUIPMENT Computer Vehicles Tent Total Cost 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 Additions 7,739 - - 7,739 Currency translation adjustments 1,717 2,660 1,950 6,327 Balance, May 31, 2017 $ 78,341 $ 92,094 $ 67,500 $ 237,935 Depreciation 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 Depreciation for the year 8,831 5,723 7,622 22,176 Currency translation adjustments 1,218 2,214 980 4,412 Balance, May 31, 2017 $ 53,544 $ 78,466 $ 36,396 $ 168,406 Carrying amounts Balance, May 31, 2016 $ 25,390 $ 18,905 $ 37,756 $ 82,051 Balance, May 31, 2017 $ 24,797 $ 13,628 $ 31,104 $ 69,529

Note 5 - Mineral Properties

Note 5 - Mineral Properties	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Mineral Industries Disclosures [Text Block]	5. MINERAL PROPERTIES The Company had the following activity related to capitalized acquisition costs: Chisna North LMS Total (note 5a)) (note 5d)) (note 5c)) Balance, May 31, 2015 $ 631,205 $ 3,861,412 $ 374,017 $ 4,866,634 Acquisition costs Cash payments (note 5d)(ii)(1) - 32,594 - 32,594 Shares issued (note 5d)(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 Acquisition costs Cash payments (note 5d)(ii)(1) - 66,876 - 66,876 Shares issued (note 5d)(ii)(1) - 18,000 - 18,000 Asset retirement obligations - 37,865 - 37,865 Currency translation adjustments - 143,319 - 143,319 Balance, May 31, 2017 $ - $ 4,527,740 $ - $ 4,527,740 The following table presents costs incurred for exploration and evaluation activities for the year ended May 31, 2017: North Total (note 5d)) Exploration costs: Assay $ 732,434 $ 732,434 Drilling 1,032,602 1,032,602 Equipment rental 75,554 75,554 Field costs 143,329 143,329 Geological/ Geophysical 328,379 328,379 Land maintenance & tenure 390,343 390,343 Permits 28,019 28,019 Studies 341,218 341,218 Travel 73,711 73,711 Total expenditures for the year $ 3,145,589 $ 3,145,589 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 5b)) (note 5a)) (note 5d)) (note 5c)) 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 a) Chisna Property, Alaska The Chisna property is located in the eastern Alaska Range, Alaska, and is comprised of unpatented mineral claims was owned 100% On November 2, 2009, On November 7, 2012, 100% On March 24, 2010, 26,516 During the year ended May 31, 2015, During the year ended May 31, 2016, 36 April 5, 2016, 25,000, 1% 1% b) West Pogo Property, Alaska The West Pogo property is located approximately 50 100% During the year ended May 31, 2014, During the year ended May 31, 2016, $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 was owned 100% May 31, 2016, $473,585 350,000 3% 1% 1% USD$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, ( 1 Pursuant to a mining lease and option to purchase agreement made effective October 27, 2008 12 ten not 10,800 first three 10,800 16,200 October 27, 2016). 1,000,000 4% may 1,250,000 1% 5,000,000 ( 2 Pursuant to a mining lease made and entered into as of May 8, 2006 two 3 10 4,000 3,500 May 8, 2007, 2008 2009 4,500 May 8, 2010 May 8, 2017). 2% may 1,000,000 1% 2,000,000 ( 3 Pursuant to a mining lease made and entered into as of May 8, 2006 2 10 2,000 2,000 May 8, 2007, 2008 2009 3,000 May 8, 2010 May 8, 2017). 3% may 850,000 1% 2,550,000 May 29, 2014, 2,400 2,400 May 29, 2015, 2016 2017 May 29, 2017), 3,600 May 29, 2018 3% may 770,000 1% 2,310,000 ( 4 Pursuant to a mining lease made and entered into as of May 16, 2006 12 10 20,500 20,000 May 16, 2017). 4% may 1,000,000 1% 4,000,000 ( 5 Pursuant to a mining lease made and entered into as of May 22, 2006 two 3 10 8,000 4,800 May 22, 2007, 2008 2009 7,200 May 22, 2010 May 22, 2017). 2% may 1,000,000 1% 2,000,000 ( 6 Pursuant to a mining lease made and entered into as of June 16, 2006 one 10 2,000 2,000 June 16, 2007, 2008 2009 3,000 June 16, 2010 June 16, 2017). 2% may 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 o Terms five December 1, 2007, five three 100,000 o Lease Payments 5,000 25,000 5,000 20,000 first fourth 20,000 December 1, 2010, 108,750 November 10, 2010 46,250 December 2, 2010. second five 10,000 50,000 50,000 fifth ninth 10,000 October 31, 2012 50,000 October 25, 2012 $126,924; 10,000 November 13, 2013 50,000 November 25, 2013 $35,871; 10,000 November 17, 2014 50,000 November 7, 2014 $21,200; 10,000 November 23, 2015 50,000 November 5, 2015 $19,237; 10,000 November 17, 2016 50,000 $53,447 November 10, 2016). o Anti-Dilution: March 2015, 85,000 2011 2014 2011: 10,000 2012 2014: 25,000 25,000 November 18, 2015 25,000 November 18, 2016). o Work Commitments 100,000 first three 200,000 4 6 300,000 7 10 may not o Retained Royalty 2% 400 3% 401 500 4% 500 ( 2 Pursuant to a mining lease and option to purchase made effective March 1, 2011 2 10 10 not 20,000 25,000 March 1, 2012 ( 2013 2014 30,000 March 1, 2015 March 1, 2017), 2% may 1,000,000 1%. 2,000,000 ( 3 Pursuant to a purchase agreement made effective March 28, 2013, five two 160,000 March 28, 2013). 0.02 12 240,000 4.77% December 31, 2015 ( December 17, 2015). $406,240 400,000 $157,408 $248,832 240,000 May 31, 2013. ( 4 In December 2013, 30 1,600 $1,100,118 1,034,626 ( 5 On March 30, 2015, three 2014. 3 7 5,000 5,000 March 2017). 4% 500,000 1% 2,000,000 4% 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 Environmental Expenditures The operations of the Company may not 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 $340,176 252,000 May 31, 2016 - $293,578 224,000 not

Note 6 - Share Capital

Note 6 - Share Capital	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	6. SHARE CAPITAL Authorized Unlimited common shares without par value. Share issuances During the year ended May 31, 2017: a) On November 18, 2016, 25,000 5d 1 $18,000. b) On July 15, 2016, 2,550,000 $1.02 $2,601,000. $17,554 c) An aggregate of 200,000 200,000 $100,000. During the year ended May 31, 2016: a) On September 1, 2015, 4,255,320 $0.47 $2,000,000. $8,380 b) On November 18, 2015, 25,000 5d 1 $11,250. $5,021 c) On March 11, 2016, 4,900,000 $0.70 $3,430,000. $12,483 d) An aggregate of 245,334 245,334 $122,667. 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, first 2010 2013 2010 2010 may 2010 may may not 10% 2010 ten 2010 not 5 5 may 2010 A summary of the status of the stock option plan as of May 31, 2017, 2016, 2017 2016 Number of Weighted Number of Weighted Balance, beginning of the year 7,981,000 $ 0.85 7,396,334 $ 0.94 Granted 1,135,000 1.02 1,650,000 0.48 Exercised (200,000 ) (0.50 ) (245,334 ) (0.50 ) Forfeited (69,100 ) (0.93 ) (820,000 ) (0.94 ) Balance, end of the year 8,846,900 $ 0.87 7,981,000 $ 0.85 The weighted average remaining contractual life of options outstanding at May 31, 2017 1.85 2016 2.42 Stock options outstanding are as follows: 2017 2016 Expiry Date Exercise Number Exercisable Exercise Number of Exercisable September 19, 2016 $ - - - $ 0.50 219,100 219,100 November 17, 2016* $ 0.67 210,000 210,000 $ 0.67 210,000 210,000 January 23, 2017 $ - - - $ 1.10 50,000 50,000 May 1, 2017* $ 0.73 50,000 50,000 $ 0.73 50,000 50,000 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 2,016,900 2,016,900 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 2,120,000 2,120,000 September 8, 2019 $ 1.40 1,265,000 1,265,000 $ 1.40 1,265,000 842,490 September 9, 2020 $ 0.46 640,000 426,240 $ 0.46 640,000 213,120 November 13, 2020 $ 0.49 1,010,000 672,660 $ 0.49 1,010,000 336,330 June 22, 2018 $ 1.02 50,000 33,300 $ - - - September 15, 2021 $ 0.91 1,085,000 361,305 $ - - - 8,846,900 7,555,405 7,981,000 6,457,940 *The Company’s share trading policy (the “Policy”) requires that all restricted persons and others who are subject to the Policy refrain from conducting any transactions involving the purchase or sale of the Company’s securities, during the period in any quarter commencing 30 2010 not not 10 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 $691,819 2016 $420,866 For the year ended May 31, 2017 2016 Risk-free interest rate 0.71 % 0.88 % Expected life of options (in years) 4.87 5 Annualized volatility 85.96 % 72.33 % Dividend yield 0 % 0 % Exercise price $ 0.91 $ 0.48 Fair value per share $ 0.61 $ 0.26 Annualized volatility was determined by reference to historic volatility of the Company. 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, 2017 2016 Consulting fees $ 301,884 $ 415,360 Exploration expenditures – Geological/geophysical 33,433 18,468 Investor relations 73,514 96,309 Professional fees 6,777 16,678 Wages and benefits 165,771 279,106 $ 581,379 $ 825,921

Note 7 - Related Party Transact

Note 7 - Related Party Transactions	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	7. RELATED PARTY TRANSACTIONS The Company entered into the following transactions with related parties: For the year ended May 31, 2017 2016 Consulting fees to CFO $ 110,000 $ 105,333 Wages and benefits to CEO and COO 790,187 806,046 Wages and benefits to former President - 234,997 Directors fees (included in consulting fees) 151,250 151,250 Fees to Vice President of Corporate Communications (included in investor relations) 137,500 190,000 Stock-based compensation to related parties 476,664 653,520 $ 1,665,601 $ 2,141,146 As at May 31, 2017, $18,271 2016 $7,628 These amounts were unsecured, non-interest bearing and had no not 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 three one

Note 8 - Geographic Segmented I

Note 8 - Geographic Segmented Information	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	8. GEOGRAPHIC SEGMENTED INFORMATION The Company operates in one two Canada United States Total May 31, 2017 Capitalized acquisition costs $ - $ 4,527,740 $ 4,527,740 Property and equipment $ 8,367 $ 61,162 $ 69,529 May 31, 2016 Capitalized acquisition costs $ - $ 4,261,680 $ 4,261,680 Property and equipment $ 8,068 $ 73,983 $ 82,051 For the year ended May 31, 2017 2016 Net loss for the year – Canada $ (2,138,433 ) $ (2,118,555 ) Net loss for the year – United States (4,589,289 ) (5,315,660 ) Net loss for the year $ (6,727,722 ) $ (7,434,215 )

Note 9 - Subsidiaries

Note 9 - Subsidiaries	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Subsidiaries [Text Block]	9. SUBSIDIARIES Significant subsidiaries for the years ended May 31, 2017 2016 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 %

Note 10 - Supplemental Cash Flo

Note 10 - Supplemental Cash Flow Information	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Cash Flow, Supplemental Disclosures [Text Block]	10. SUPPLEMENTAL CASH FLOW INFORMATION For the year ended May 31, 2017 2016 Supplemental cash flow information Interest paid $ - $ 5,113 Income taxes paid (received) $ - $ - Non-cash financing and investing transactions Shares issued to acquire mineral properties $ 18,000 $ 11,250 Change in asset retirement obligations included in capitalized acquisition costs $ 37,865 $ 153,825 Reclassification of contributed surplus on exercise of stock options $ 78,054 $ 95,748

Note 11 - Income Taxes

Note 11 - Income Taxes	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	11. INCOME TAXES A reconciliation of income taxes at statutory rates with the reported taxes is as follows for the years ended May 31: 2017 2016 Loss before income taxes $ (6,727,722 ) $ (7,434,215 ) Statutory Canadian corporate tax rate 26.00 % 26.00 % Income tax recovery at statutory rates $ (1,749,208 ) $ (1,932,896 ) Stock-based compensation 151,159 214,739 Effect of tax rate change - - Difference in tax rates in other jurisdictions (374,370 ) (422,602 ) Tax benefits not realized 1,972,419 2,140,759 Income tax recovery $ - $ - The significant components of the Company’s deferred income tax assets and liabilities are as follows: 2017 2016 Deferred income tax assets (liabilities) Mineral properties $ 17,495,000 $ 15,907,000 Property and equipment 38,000 30,000 Share issuance costs 32,000 45,000 Non-capital losses available for future periods 7,476,000 6,451,000 25,041,000 22,433,000 Valuation allowance (25,041,000 ) (22,433,000 ) Net deferred tax assets $ - $ - At May 31, 2017, $9,428,000 $14,778,000 not Canada United States 2029 $ - $ 1,291,000 2030 - 1,000 2031 379,000 192,000 2032 1,089,000 1,643,000 2033 1,443,000 2,168,000 2034 1,733,000 4,224,000 2035 1,806,000 1,963,000 2036 1,354,000 1,936,000 2037 1,624,000 1,360,000 $ 9,428,000 $ 14,778,000 In addition, the Company has available mineral resource expenses that are related to the Company’s exploration activities in the United States of approximately $55,428,000 $333,000, may may not

Note 12 - Subsequent Events

Note 12 - Subsequent Events	12 Months Ended
	May 31, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	12. SUBSEQUENT EVENT a) On June 9, 2017, 1,000,000 $0.81 1% $1,400 1% 2% $1,400

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	May 31, 2017
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 generally accepted accounting principles in the United States (“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]	Significant judgments, estimates and assumptions 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 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 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. · 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. using the currency of the primary economic environment in which each of the parent company and its subsidiaries operates. · 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 three 30 no
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 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 expenditures 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% Vehicles - 30% Tent - 20% Additions during the year are depreciated at one 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.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of long-lived assets The Company assesses long-lived assets for impairment or when facts and circumstances suggest that the carrying amount of an asset may not, not 50%.
Asset Retirement Obligation [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 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, 2017, $340,176 252,000 2016 $293,578 224,000
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 not
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 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 contributed surplus. Upon exercise of the warrants, the related fair value is reallocated to share capital.
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, 2017, 8,846,900 2016 7,981,000 not
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
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 is not

Note 3 - Fair Value of Financ19

Note 3 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	May 31, 2017 Level 1 Cash and cash equivalents $ 1,300,553 May 31, 2016 Level 1 Cash and cash equivalents $ 4,783,519

Note 4 - Property and Equipme20

Note 4 - Property and Equipment (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Property, Plant and Equipment [Table Text Block]	Computer Vehicles Tent Total Cost 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 Additions 7,739 - - 7,739 Currency translation adjustments 1,717 2,660 1,950 6,327 Balance, May 31, 2017 $ 78,341 $ 92,094 $ 67,500 $ 237,935 Depreciation 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 Depreciation for the year 8,831 5,723 7,622 22,176 Currency translation adjustments 1,218 2,214 980 4,412 Balance, May 31, 2017 $ 53,544 $ 78,466 $ 36,396 $ 168,406 Carrying amounts Balance, May 31, 2016 $ 25,390 $ 18,905 $ 37,756 $ 82,051 Balance, May 31, 2017 $ 24,797 $ 13,628 $ 31,104 $ 69,529

Note 5 - Mineral Properties (Ta

Note 5 - Mineral Properties (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Capitalized Costs Relating to Acquisition Activities Disclosure [Table Text Block]	Chisna North LMS Total (note 5a)) (note 5d)) (note 5c)) Balance, May 31, 2015 $ 631,205 $ 3,861,412 $ 374,017 $ 4,866,634 Acquisition costs Cash payments (note 5d)(ii)(1) - 32,594 - 32,594 Shares issued (note 5d)(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 Acquisition costs Cash payments (note 5d)(ii)(1) - 66,876 - 66,876 Shares issued (note 5d)(ii)(1) - 18,000 - 18,000 Asset retirement obligations - 37,865 - 37,865 Currency translation adjustments - 143,319 - 143,319 Balance, May 31, 2017 $ - $ 4,527,740 $ - $ 4,527,740
Cost Incurred in Acquisition Exploration and Evaluation Activities Disclosure [Table Text Block]	North Total (note 5d)) Exploration costs: Assay $ 732,434 $ 732,434 Drilling 1,032,602 1,032,602 Equipment rental 75,554 75,554 Field costs 143,329 143,329 Geological/ Geophysical 328,379 328,379 Land maintenance & tenure 390,343 390,343 Permits 28,019 28,019 Studies 341,218 341,218 Travel 73,711 73,711 Total expenditures for the year $ 3,145,589 $ 3,145,589 West Pogo Chisna North LMS Total (note 5b)) (note 5a)) (note 5d)) (note 5c)) 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

Note 6 - Share Capital (Tables)

Note 6 - Share Capital (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Share-based Compensation, Stock Options, Activity [Table Text Block]	2017 2016 Number of Weighted Number of Weighted Balance, beginning of the year 7,981,000 $ 0.85 7,396,334 $ 0.94 Granted 1,135,000 1.02 1,650,000 0.48 Exercised (200,000 ) (0.50 ) (245,334 ) (0.50 ) Forfeited (69,100 ) (0.93 ) (820,000 ) (0.94 ) Balance, end of the year 8,846,900 $ 0.87 7,981,000 $ 0.85
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	2017 2016 Expiry Date Exercise Number Exercisable Exercise Number of Exercisable September 19, 2016 $ - - - $ 0.50 219,100 219,100 November 17, 2016* $ 0.67 210,000 210,000 $ 0.67 210,000 210,000 January 23, 2017 $ - - - $ 1.10 50,000 50,000 May 1, 2017* $ 0.73 50,000 50,000 $ 0.73 50,000 50,000 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 2,016,900 2,016,900 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 2,120,000 2,120,000 September 8, 2019 $ 1.40 1,265,000 1,265,000 $ 1.40 1,265,000 842,490 September 9, 2020 $ 0.46 640,000 426,240 $ 0.46 640,000 213,120 November 13, 2020 $ 0.49 1,010,000 672,660 $ 0.49 1,010,000 336,330 June 22, 2018 $ 1.02 50,000 33,300 $ - - - September 15, 2021 $ 0.91 1,085,000 361,305 $ - - - 8,846,900 7,555,405 7,981,000 6,457,940
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	For the year ended May 31, 2017 2016 Risk-free interest rate 0.71 % 0.88 % Expected life of options (in years) 4.87 5 Annualized volatility 85.96 % 72.33 % Dividend yield 0 % 0 % Exercise price $ 0.91 $ 0.48 Fair value per share $ 0.61 $ 0.26
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	For the year ended May 31, 2017 2016 Consulting fees $ 301,884 $ 415,360 Exploration expenditures – Geological/geophysical 33,433 18,468 Investor relations 73,514 96,309 Professional fees 6,777 16,678 Wages and benefits 165,771 279,106 $ 581,379 $ 825,921

Note 7 - Related Party Transa23

Note 7 - Related Party Transactions (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Schedule of Related Party Transactions [Table Text Block]	For the year ended May 31, 2017 2016 Consulting fees to CFO $ 110,000 $ 105,333 Wages and benefits to CEO and COO 790,187 806,046 Wages and benefits to former President - 234,997 Directors fees (included in consulting fees) 151,250 151,250 Fees to Vice President of Corporate Communications (included in investor relations) 137,500 190,000 Stock-based compensation to related parties 476,664 653,520 $ 1,665,601 $ 2,141,146

Note 8 - Geographic Segmented24

Note 8 - Geographic Segmented Information (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Long-lived Assets by Geographic Areas [Table Text Block]	Canada United States Total May 31, 2017 Capitalized acquisition costs $ - $ 4,527,740 $ 4,527,740 Property and equipment $ 8,367 $ 61,162 $ 69,529 May 31, 2016 Capitalized acquisition costs $ - $ 4,261,680 $ 4,261,680 Property and equipment $ 8,068 $ 73,983 $ 82,051
Net Income (Loss) by Geographic Areas [Table Text Block]	For the year ended May 31, 2017 2016 Net loss for the year – Canada $ (2,138,433 ) $ (2,118,555 ) Net loss for the year – United States (4,589,289 ) (5,315,660 ) Net loss for the year $ (6,727,722 ) $ (7,434,215 )

Note 9 - Subsidiaries (Tables)

Note 9 - Subsidiaries (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Schedule of Significant Subsidiaries [Table Text Block]	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 %

Note 10 - Supplemental Cash F26

Note 10 - Supplemental Cash Flow Information (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	For the year ended May 31, 2017 2016 Supplemental cash flow information Interest paid $ - $ 5,113 Income taxes paid (received) $ - $ - Non-cash financing and investing transactions Shares issued to acquire mineral properties $ 18,000 $ 11,250 Change in asset retirement obligations included in capitalized acquisition costs $ 37,865 $ 153,825 Reclassification of contributed surplus on exercise of stock options $ 78,054 $ 95,748

Note 11 - Income Taxes (Tables)

Note 11 - Income Taxes (Tables)	12 Months Ended
	May 31, 2017
Notes Tables
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2017 2016 Loss before income taxes $ (6,727,722 ) $ (7,434,215 ) Statutory Canadian corporate tax rate 26.00 % 26.00 % Income tax recovery at statutory rates $ (1,749,208 ) $ (1,932,896 ) Stock-based compensation 151,159 214,739 Effect of tax rate change - - Difference in tax rates in other jurisdictions (374,370 ) (422,602 ) Tax benefits not realized 1,972,419 2,140,759 Income tax recovery $ - $ -
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2017 2016 Deferred income tax assets (liabilities) Mineral properties $ 17,495,000 $ 15,907,000 Property and equipment 38,000 30,000 Share issuance costs 32,000 45,000 Non-capital losses available for future periods 7,476,000 6,451,000 25,041,000 22,433,000 Valuation allowance (25,041,000 ) (22,433,000 ) Net deferred tax assets $ - $ -
Summary of Tax Credit Carryforwards [Table Text Block]	Canada United States 2029 $ - $ 1,291,000 2030 - 1,000 2031 379,000 192,000 2032 1,089,000 1,643,000 2033 1,443,000 2,168,000 2034 1,733,000 4,224,000 2035 1,806,000 1,963,000 2036 1,354,000 1,936,000 2037 1,624,000 1,360,000 $ 9,428,000 $ 14,778,000

Note 1 - Nature and Continuan28

Note 1 - Nature and Continuance of Operations (Details Textual) - CAD	May 31, 2017	May 31, 2016
Working Capital	CAD 1,270,168	CAD 4,742,321

Note 2 - Significant Accounti29

Note 2 - Significant Accounting Policies (Details Textual)	12 Months Ended
	May 31, 2017USD ($)shares	May 31, 2016USD ($)shares	May 31, 2017CAD	May 31, 2016CAD
Asset Retirement Obligations, Noncurrent	$ 252,000	$ 224,000	CAD 340,176	CAD 293,578
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8,846,900	7,981,000
Computer Equipment [Member]
Property, Plant and Equipment, Depreciation Methods	30% declining balance
Vehicles [Member]
Property, Plant and Equipment, Depreciation Methods	30% declining balance
Tent [Member]
Property, Plant and Equipment, Depreciation Methods	20% declining balance

Note 3 - Fair Value of Financ30

Note 3 - Fair Value of Financial Instruments - Financial Instruments Recorded at Fair Value (Details) - CAD	May 31, 2017	May 31, 2016
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	CAD 1,300,553	CAD 4,783,519

Note 4 - Property and Equipme31

Note 4 - Property and Equipment - Property and Equipment (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Cost, Balance	CAD 223,869	CAD 205,974
Additions	7,739	7,153
Currency translation adjustments	6,327	10,742
Cost, Balance	237,935	223,869
Accumulated depreciation, Balance	141,818	109,271
Depreciation	22,176	27,100
Currency translation adjustments	4,412	5,447
Accumulated depreciation, Balance	168,406	141,818
Carrying amounts	69,529	82,051
Computer Equipment [Member]
Cost, Balance	68,885	58,946
Additions	7,739	7,153
Currency translation adjustments	1,717	2,786
Cost, Balance	78,341	68,885
Accumulated depreciation, Balance	43,495	32,635
Depreciation	8,831	9,409
Currency translation adjustments	1,218	1,451
Accumulated depreciation, Balance	53,544	43,495
Carrying amounts	24,797	25,390
Vehicles [Member]
Cost, Balance	89,434	84,843
Additions		0
Currency translation adjustments	2,660	4,591
Cost, Balance	92,094	89,434
Accumulated depreciation, Balance	70,529	59,223
Depreciation	5,723	8,171
Currency translation adjustments	2,214	3,135
Accumulated depreciation, Balance	78,466	70,529
Carrying amounts	13,628	18,905
Tent [Member]
Cost, Balance	65,550	62,185
Additions		0
Currency translation adjustments	1,950	3,365
Cost, Balance	67,500	65,550
Accumulated depreciation, Balance	27,794	17,413
Depreciation	7,622	9,520
Currency translation adjustments	980	861
Accumulated depreciation, Balance	36,396	27,794
Carrying amounts	CAD 31,104	CAD 37,756

Note 5 - Mineral Properties (De

Note 5 - Mineral Properties (Details Textual) T in Millions		Nov. 18, 2016shares	Nov. 17, 2016USD ($)	Nov. 10, 2016CADshares	Apr. 05, 2016USD ($)	Nov. 23, 2015USD ($)	Nov. 18, 2015shares	Nov. 05, 2015CADshares	Mar. 30, 2015USD ($)	Nov. 17, 2014USD ($)	Nov. 07, 2014CADshares	Nov. 25, 2013CADshares	Nov. 13, 2013USD ($)	Mar. 28, 2013USD ($)T$ / T	Nov. 07, 2012	Oct. 31, 2012USD ($)	Oct. 25, 2012CADshares	Mar. 01, 2011USD ($)	Dec. 02, 2010USD ($)shares	Nov. 10, 2010USD ($)	Oct. 27, 2008USD ($)	Dec. 01, 2007USD ($)shares	Jun. 16, 2006USD ($)	May 22, 2006USD ($)	May 16, 2006USD ($)	May 08, 2006USD ($)	Dec. 31, 2013USD ($)a	Dec. 31, 2013CADa	May 31, 2017CAD	May 31, 2016USD ($)km²	May 31, 2016CAD	May 31, 2013USD ($)	May 31, 2013CAD	Dec. 31, 2011shares	Dec. 31, 2014shares	Mar. 31, 2015shares	May 31, 2017USD ($)	May 31, 2017CAD	May 31, 2016CADkm²	Mar. 30, 2016USD ($)	Mar. 01, 2015USD ($)	May 29, 2014USD ($)	Mar. 01, 2014USD ($)	May 31, 2013CAD	Mar. 01, 2013USD ($)	Mar. 01, 2012USD ($)	Mar. 24, 2010ha
Payments to Acquire Mineral Rights | CAD	[1]																												CAD 66,876		CAD 32,594
Asset Retirement Obligations, Noncurrent																														$ 224,000							$ 252,000	CAD 340,176	CAD 293,578
Raven Gold [Member] | Good Paster Database [Member]
Proceeds from Sale Of Mineral Properties																														$ 100,000	136,058
Raven Gold [Member] | Ahtna [Member]
Land Subject to Ground Leases | ha																																															26,516
Chisna [Member]
Payments to Acquire Mineral Rights | CAD	[1]
Net Smelter Return, Royalty Percentage of Precious Metals					1.00%
Net Smelter Return, Royalty Percentage of Base Metals					1.00%
Unpatented Mineral Claims															100.00%														100.00%
Number of Core Claims																														36									36
Proceeds from Sale Of Mineral Properties					$ 25,000
West Pogo [Member]
Unpatented Mineral Claims																													100.00%
West Pogo [Member] | Raven Gold [Member]
Net Smelter Return, Royalty Percentage of Precious Metals																														3.00%									3.00%
Net Smelter Return, Royalty Percentage of Base Metals																														1.00%									1.00%
Percentage of Precious Metal Royalty Buy Down																														1.00%									1.00%
Precious Metal Royalty Buy Down, Amount																														$ 2,000,000
Additional Percentage of Precious Metal Royalty Buy Down																														1.00%									1.00%
Additional Precious Metal Royalty Buy Down, Amount																														$ 5,000,000
Proceeds from Sale Of Mineral Properties																														$ 20,000	25,728
West Pogo [Member] | Raven Gold [Member] | Good Paster Database [Member]
Net Smelter Return, Royalty Percentage of New Claims																														1.00%									1.00%
Land Subject to Ground Leases | km²																														1,500									1,500
Purchase Price for One Half of Royalty																														$ 2,000,000
LMS Property [Member]
Payments to Acquire Mineral Rights | CAD	[1]
Net Smelter Return, Royalty Percentage of Precious Metals																														3.00%									3.00%
Net Smelter Return, Royalty Percentage of Base Metals																														1.00%									1.00%
Percentage of Precious Metal Royalty Buy Down																														1.00%									1.00%
Precious Metal Royalty Buy Down, Amount																														$ 4,000,000
Unpatented Mineral Claims																													100.00%
Proceeds from Sale Of Mineral Properties																														$ 350,000	473,585
North Bullfrog [Member]
Payments to Acquire Mineral Rights | CAD	[1]																												CAD 66,876		CAD 32,594
Land Subject to Ground Leases | a																											1,600	1,600
Unpatented Mineral Claims																														100.00%	100.00%
North Bullfrog [Member] | Nevada Corporation [Member]
Number of Patented Mining Claims Leased																										2
Mining Lease Agreement Term of Contract																										10 years
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																										$ 2,000																$ 2,400
Capital Leases, Future Minimum Payments Due in Two Years																										2,000																2,400
Capital Leases, Future Minimum Payments Due in Three Years																										2,000																2,400
Capital Leases, Future Minimum Payments Due in Four Years																																										2,400
Capital Leases, Future Minimum Payments Due in Five Years																										3,000																$ 3,600
Capital Leases, Future Minimum Payments Due Thereafter																										$ 3,000
Net Smelter Return, Royalty Percentage of Production																										3.00%																3.00%
Purchase Price of Each 1% NSR Royalty																										$ 850,000																$ 770,000
Purchase Price of NSR Royalty																										$ 2,550,000																$ 2,310,000
North Bullfrog [Member] | Redstar Gold Corp. [Member]
Number of Patented Mining Claims Leased																					12		1	3	12	3
Mining Lease Agreement Term of Contract																					10 years		10 years	10 years	10 years	10 years
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																					$ 10,800		$ 2,000	$ 8,000	$ 20,500	$ 4,000
Capital Leases, Future Minimum Payments Due in Two Years																							2,000	4,800		3,500
Capital Leases, Future Minimum Payments Due in Three Years																					10,800		2,000	4,800		3,500
Capital Leases, Future Minimum Payments Due in Four Years																							2,000	4,800		3,500
Capital Leases, Future Minimum Payments Due in Five Years																							$ 3,000	$ 7,200		4,500
Capital Leases, Future Minimum Payments Due Thereafter																					16,200				$ 20,000	$ 4,500
Purchase Obligation																					$ 1,000,000
Net Smelter Return, Royalty Percentage of Production																					4.00%		2.00%	2.00%	4.00%	2.00%
Purchase Price of Each 1% NSR Royalty																					$ 1,250,000		$ 1,000,000	$ 1,000,000	$ 1,000,000	$ 1,000,000
Purchase Price of NSR Royalty																					$ 5,000,000		$ 2,000,000	$ 2,000,000	$ 4,000,000	$ 2,000,000
North Bullfrog [Member] | Corvus Gold Nevada Inc. [Member]
Acquisition Costs, Period Cost																																$ 400,000	CAD 406,240
Payments to Acquire Mineral Rights | CAD																																	CAD 157,408
Number of Patented Sunflower Claims									3
Lease Term									3 years													5 years
Additional Lease Term									7 years													5 years
Additional Term if the Company Makes Advance Minimum Royalty Payments of USD100,000 per year																						3 years
Additional Lease Payment for Patented Mining Claims Lease on Each Year																						$ 5,000
Lease Payments Additional Common Shares Issued | shares																						20,000
Cash Payment in Lieu of Issuing Shares Under Lease Agreement																				$ 108,750
Common Stock Issued During Period Shares Issued for Lease Payments | shares																			46,250
Lease Payment for Patended Mining Claims Upon Extend Lease																			$ 10,000
Lease Payments Common Shares Issued Upon Extend Lease | shares																			50,000
Lease Payments Additional Common Shares Issued Upon Extend Lease | shares																			50,000
Cash Payment Along with Shares Issued as Lease Payment | CAD				CAD 53,447				CAD 19,237			CAD 21,200	CAD 35,871					CAD 126,924
Lease Payment for Patented Mining Claims Lease			$ 10,000			$ 10,000				$ 10,000			$ 10,000			$ 10,000						$ 5,000
Lease Payments Common Shares Issued | shares		25,000		50,000			25,000	50,000			50,000	50,000					50,000					25,000												10,000	25,000	85,000
Work Commitments for the First Three Year																						$ 100,000
Work Commitments for the Years 4 to 6																						200,000
Work Commitments for the years 7 to 10																						$ 300,000
Percentage of NSR Royalty Required to Pay If Average Gold Price Less than or Equal to USD400 per Ounce																						2.00%
Percentage of NSR Royalty Required to Pay If Average Gold Price Between USD401 and USD500 per Ounce																						3.00%
Percentage of NSR Royalty Required to Pay if Average Gold Price Greater than USD500 per Ounce																						4.00%
Number of Patented Mining Claims Leased																		2
Mining Lease Agreement Term of Contract																		10 years
Mining Lease Agreement Term of Contract, Extension Term																		10 years
Lease Agreement, Option to Purchase Property, Purcahse Price									$ 300,000
Advance Royalties Payment									$ 5,000									$ 20,000				$ 100,000																		$ 5,000	$ 30,000		$ 25,000		$ 25,000	$ 25,000
Net Smelter Return, Royalty Percentage of Production									4.00%									2.00%
Purchase Price of Each 1% NSR Royalty									$ 500,000									$ 1,000,000
Purchase Price of NSR Royalty									$ 2,000,000									$ 2,000,000
Patented Mining Claims, Agreed to Purchase														5
Purchase Agreement Payable														$ 160,000
Price Per Ton Of Overburden to be Stored On Property | $ / T														0.02
Minimum Storage Capacity of Property | T														12
Notes Payable														$ 240,000																		$ 240,000												CAD 248,832
North Bullfrog [Member] | Corvus Gold Nevada Inc. [Member] | Promissory Note Payable [Member]
Debt Instrument, Interest Rate, Effective Percentage														4.77%
Land and Water Rights [Member]
Payments to Acquire Mineral Rights																											$ 1,034,626	CAD 1,100,118
[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: Initial term of five years, commencing December 1, 2007, with the option to extend the lease for an additional five years. The lease will continue for as long thereafter as the property is in commercial production or, alternatively, for an additional three years if Corvus Nevada makes advance minimum royalty payments of USD 100,000 per year (which are recoupable against actual production royalties). - Lease Payments: USD 5,000 (paid) and 25,000 common shares of ITH (delivered) following regulatory acceptance of the transaction; and an additional USD 5,000 and 20,000 common shares on each of the first through fourth lease anniversaries (paid and issued). Pursuant to an agreement with the lessors, in lieu of the 20,000 ITH shares due December 1, 2010, Corvus Nevada paid USD 108,750 on November 10, 2010 and delivered 46,250 common shares of the Company on December 2, 2010. If Corvus Nevada elects to extend the lease for a second five-year term, it will pay USD 10,000 and deliver 50,000 common shares of ITH upon election being made, and an additional 50,000 common shares of ITH on each of the fifth through ninth anniversaries (USD 10,000 paid on October 31, 2012 and 50,000 common shares of ITH delivered on October 25, 2012 paid with cash of $126,924; USD 10,000 paid on November 13, 2013 and 50,000 common shares of ITH delivered on November 25, 2013 paid with cash of $35,871; USD 10,000 paid on November 17, 2014 and 50,000 common shares of ITH delivered on November 7, 2014 paid with cash of $21,200; USD 10,000 paid on November 23, 2015 and 50,000 common shares of ITH delivered on November 5, 2015 paid with cash of $19,237; and USD 10,000 paid on November 17, 2016 and 50,000 common shares of ITH, purchased for $53,447 in the market by the Company, were delivered on November 10, 2016). - Anti-Dilution: Pursuant to an amended agreement agreed to by the lessors in March 2015, the Company shall deliver a total of 85,000 common shares (issued) of the Company for the years 2011 to 2014 (2011: 10,000 common shares; 2012 to 2014: 25,000 common shares each year). All future payments will be satisfied by the delivery of an additional 1/2 common shares of the Company for each of the ITH shares due per the original agreement (issued 25,000 shares of the Company on November 18, 2015 and 25,000 shares of the Company on November 18, 2016). - Work Commitments: USD 100,000 per year for the first three years (incurred), USD 200,000 per year for the years 4 - 6 (incurred) and USD 300,000 for the years 7 - 10 (incurred). Excess expenditures in any year may be carried forward. If Corvus Nevada does not incur the required expenditures in year one, the deficiency is required to be paid to the lessors. - Retained Royalty: Corvus Nevada will pay the lessors a NSR royalty of 2% if the average gold price is USD 400 per ounce or less, 3% if the average gold price is between USD 401 and USD 500 per ounce and 4% if the average gold price is greater than USD 500 per ounce.

Note 5 - Mineral Properties - A

Note 5 - Mineral Properties - Activity Related to Capitalized Acquisition Costs (Details) - CAD		Nov. 18, 2016	Nov. 18, 2015	May 31, 2017		May 31, 2016
Balance				CAD 4,261,680		CAD 4,866,634
Cash payments (note 5d)(ii)(1)	[1]			66,876		32,594
Share issued for capitalized acquisition costs		CAD 18,000	CAD 11,250	18,000	[1]	11,250	[1]
Asset retirement obligations				37,865		153,825
Currency translation adjustments				143,319		276,635
Reclassified to asset held-for-sale						(401,563)
Write-off of capitalized acquisition costs (note 5a))						(677,695)
Balance				4,527,740		4,261,680
Chisna [Member]
Balance						631,205
Cash payments (note 5d)(ii)(1)	[1]
Share issued for capitalized acquisition costs	[1]
Asset retirement obligations
Currency translation adjustments						46,490
Reclassified to asset held-for-sale
Write-off of capitalized acquisition costs (note 5a))						(677,695)
Balance
North Bullfrog [Member]
Balance				4,261,680		3,861,412
Cash payments (note 5d)(ii)(1)	[1]			66,876		32,594
Share issued for capitalized acquisition costs	[1]			18,000		11,250
Asset retirement obligations				37,865		153,825
Currency translation adjustments				143,319		202,599
Reclassified to asset held-for-sale
Write-off of capitalized acquisition costs (note 5a))
Balance				4,527,740		4,261,680
LMS Property [Member]
Balance						374,017
Cash payments (note 5d)(ii)(1)	[1]
Share issued for capitalized acquisition costs	[1]
Asset retirement obligations
Currency translation adjustments						27,546
Reclassified to asset held-for-sale						(401,563)
Write-off of capitalized acquisition costs (note 5a))
Balance
[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: Initial term of five years, commencing December 1, 2007, with the option to extend the lease for an additional five years. The lease will continue for as long thereafter as the property is in commercial production or, alternatively, for an additional three years if Corvus Nevada makes advance minimum royalty payments of USD 100,000 per year (which are recoupable against actual production royalties). - Lease Payments: USD 5,000 (paid) and 25,000 common shares of ITH (delivered) following regulatory acceptance of the transaction; and an additional USD 5,000 and 20,000 common shares on each of the first through fourth lease anniversaries (paid and issued). Pursuant to an agreement with the lessors, in lieu of the 20,000 ITH shares due December 1, 2010, Corvus Nevada paid USD 108,750 on November 10, 2010 and delivered 46,250 common shares of the Company on December 2, 2010. If Corvus Nevada elects to extend the lease for a second five-year term, it will pay USD 10,000 and deliver 50,000 common shares of ITH upon election being made, and an additional 50,000 common shares of ITH on each of the fifth through ninth anniversaries (USD 10,000 paid on October 31, 2012 and 50,000 common shares of ITH delivered on October 25, 2012 paid with cash of $126,924; USD 10,000 paid on November 13, 2013 and 50,000 common shares of ITH delivered on November 25, 2013 paid with cash of $35,871; USD 10,000 paid on November 17, 2014 and 50,000 common shares of ITH delivered on November 7, 2014 paid with cash of $21,200; USD 10,000 paid on November 23, 2015 and 50,000 common shares of ITH delivered on November 5, 2015 paid with cash of $19,237; and USD 10,000 paid on November 17, 2016 and 50,000 common shares of ITH, purchased for $53,447 in the market by the Company, were delivered on November 10, 2016). - Anti-Dilution: Pursuant to an amended agreement agreed to by the lessors in March 2015, the Company shall deliver a total of 85,000 common shares (issued) of the Company for the years 2011 to 2014 (2011: 10,000 common shares; 2012 to 2014: 25,000 common shares each year). All future payments will be satisfied by the delivery of an additional 1/2 common shares of the Company for each of the ITH shares due per the original agreement (issued 25,000 shares of the Company on November 18, 2015 and 25,000 shares of the Company on November 18, 2016). - Work Commitments: USD 100,000 per year for the first three years (incurred), USD 200,000 per year for the years 4 - 6 (incurred) and USD 300,000 for the years 7 - 10 (incurred). Excess expenditures in any year may be carried forward. If Corvus Nevada does not incur the required expenditures in year one, the deficiency is required to be paid to the lessors. - Retained Royalty: Corvus Nevada will pay the lessors a NSR royalty of 2% if the average gold price is USD 400 per ounce or less, 3% if the average gold price is between USD 401 and USD 500 per ounce and 4% if the average gold price is greater than USD 500 per ounce.

Note 5 - Mineral Properties - C

Note 5 - Mineral Properties - Costs Incurred for Exploration and Evaluation Activities (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 3,145,589	CAD 3,024,448
Cost recovery		(168,103)
Costs Incurred for Exploration and Evaluation Activities, Net		2,856,345
Assay [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	732,434	757,432
Drilling [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	1,032,602	929,841
Equipment rental [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	75,554	51,347
Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	143,329	135,371
Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	328,379	336,854
Land Maintenance and Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	390,343	420,229
Permits [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	28,019	632
Studies [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	341,218	322,972
Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	73,711	67,771
Transportation [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		1,999
North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	3,145,589	2,965,999
Costs Incurred for Exploration and Evaluation Activities, Net		2,965,999
North Bullfrog [Member] | Assay [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	732,434	757,432
North Bullfrog [Member] | Drilling [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	1,032,602	929,841
North Bullfrog [Member] | Equipment rental [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	75,554	51,347
North Bullfrog [Member] | Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	143,329	134,382
North Bullfrog [Member] | Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	328,379	328,740
North Bullfrog [Member] | Land Maintenance and Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	390,343	373,795
North Bullfrog [Member] | Permits [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	28,019	632
North Bullfrog [Member] | Studies [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	341,218	322,972
North Bullfrog [Member] | Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 73,711	66,858
West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		181
Cost recovery		(23,802)
Costs Incurred for Exploration and Evaluation Activities, Net		(23,621)
West Pogo [Member] | Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		181
Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		20,904
Cost recovery		(39,463)
Costs Incurred for Exploration and Evaluation Activities, Net		(18,559)
Chisna [Member] | Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		247
Chisna [Member] | Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		6,210
Chisna [Member] | Land Maintenance and Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		13,534
Chisna [Member] | Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		913
LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		37,364
Cost recovery		(104,838)
Costs Incurred for Exploration and Evaluation Activities, Net		(67,474)
LMS Property [Member] | Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		561
LMS Property [Member] | Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		1,904
LMS Property [Member] | Land Maintenance and Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		32,900
LMS Property [Member] | Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross
LMS Property [Member] | Transportation [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		CAD 1,999

Note 6 - Share Capital (Details

Note 6 - Share Capital (Details Textual) - CAD	Nov. 18, 2016	Jul. 15, 2016	Mar. 11, 2016	Nov. 18, 2015	Sep. 01, 2015	May 31, 2017		May 31, 2016
Stock Issued During Period, Shares, Acquisitions	25,000			25,000
Stock Issued During Period, Value, Acquisitions	CAD 18,000			CAD 11,250		CAD 18,000	[1]	CAD 11,250	[1]
Proceeds from Issuance of Private Placement		CAD 2,601,000	CAD 3,430,000		CAD 2,000,000
Payments of Stock Issuance Costs				CAD 5,021		CAD 17,554		CAD 25,884
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period						200,000		245,334
Proceeds from Stock Options Exercised						CAD 100,000		CAD 122,667
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term						1 year 310 days		2 years 153 days
The 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period						200,000		245,334
Employee Stock Option [Member]
Stock Granted, Value, Share-based Compensation, Gross						CAD 691,819		CAD 420,866
Employee Stock Option [Member] | The 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum						10.00%
Employee Stock Option, Expiring on November 17, 2016 [Member]
Options Exercisable Period, After Restrictions Lifted								10 days
Private Placement [Member]
Stock Issued During Period, Shares, New Issues		2,550,000	4,900,000		4,255,320
Sale of Stock, Price Per Share		CAD 1.02	CAD 0.70		CAD 0.47
Payments of Stock Issuance Costs		CAD 17,554	CAD 12,483		CAD 8,380
[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: Initial term of five years, commencing December 1, 2007, with the option to extend the lease for an additional five years. The lease will continue for as long thereafter as the property is in commercial production or, alternatively, for an additional three years if Corvus Nevada makes advance minimum royalty payments of USD 100,000 per year (which are recoupable against actual production royalties). - Lease Payments: USD 5,000 (paid) and 25,000 common shares of ITH (delivered) following regulatory acceptance of the transaction; and an additional USD 5,000 and 20,000 common shares on each of the first through fourth lease anniversaries (paid and issued). Pursuant to an agreement with the lessors, in lieu of the 20,000 ITH shares due December 1, 2010, Corvus Nevada paid USD 108,750 on November 10, 2010 and delivered 46,250 common shares of the Company on December 2, 2010. If Corvus Nevada elects to extend the lease for a second five-year term, it will pay USD 10,000 and deliver 50,000 common shares of ITH upon election being made, and an additional 50,000 common shares of ITH on each of the fifth through ninth anniversaries (USD 10,000 paid on October 31, 2012 and 50,000 common shares of ITH delivered on October 25, 2012 paid with cash of $126,924; USD 10,000 paid on November 13, 2013 and 50,000 common shares of ITH delivered on November 25, 2013 paid with cash of $35,871; USD 10,000 paid on November 17, 2014 and 50,000 common shares of ITH delivered on November 7, 2014 paid with cash of $21,200; USD 10,000 paid on November 23, 2015 and 50,000 common shares of ITH delivered on November 5, 2015 paid with cash of $19,237; and USD 10,000 paid on November 17, 2016 and 50,000 common shares of ITH, purchased for $53,447 in the market by the Company, were delivered on November 10, 2016). - Anti-Dilution: Pursuant to an amended agreement agreed to by the lessors in March 2015, the Company shall deliver a total of 85,000 common shares (issued) of the Company for the years 2011 to 2014 (2011: 10,000 common shares; 2012 to 2014: 25,000 common shares each year). All future payments will be satisfied by the delivery of an additional 1/2 common shares of the Company for each of the ITH shares due per the original agreement (issued 25,000 shares of the Company on November 18, 2015 and 25,000 shares of the Company on November 18, 2016). - Work Commitments: USD 100,000 per year for the first three years (incurred), USD 200,000 per year for the years 4 - 6 (incurred) and USD 300,000 for the years 7 - 10 (incurred). Excess expenditures in any year may be carried forward. If Corvus Nevada does not incur the required expenditures in year one, the deficiency is required to be paid to the lessors. - Retained Royalty: Corvus Nevada will pay the lessors a NSR royalty of 2% if the average gold price is USD 400 per ounce or less, 3% if the average gold price is between USD 401 and USD 500 per ounce and 4% if the average gold price is greater than USD 500 per ounce.

Note 6 - Share Capital - Summar

Note 6 - Share Capital - Summary of the Status of the Stock Option Plan (Details) - CAD / shares	12 Months Ended
	May 31, 2017	May 31, 2016
Number of Options, Balance, beginning of the year (in shares)	7,981,000
Number of Options, Exercised (in shares)	(200,000)	(245,334)
Number of Options, Balance, end of the year (in shares)	8,846,900	7,981,000
The 2010 Plan [Member]
Weighted Average Exercise Price, Exercised (in CAD per share)	CAD (0.50)	CAD (0.50)
Number of Options, Balance, beginning of the year (in shares)	7,981,000	7,396,334
Weighted Average Exercise Price, Balance, beginning of the year (in CAD per share)	CAD 0.85	CAD 0.94
Number of Options, Granted (in shares)	1,135,000	1,650,000
Weighted Average Exercise Price, Granted (in CAD per share)	CAD 1.02	CAD 0.48
Number of Options, Exercised (in shares)	(200,000)	(245,334)
Number of Options, Forfeited (in shares)	(69,100)	(820,000)
Weighted Average Exercise Price, Forfeited (in CAD per share)	CAD (0.93)	CAD (0.94)
Weighted Average Exercise Price, Balance, beginning of the year (in CAD per share)	CAD (0.87)	CAD (0.85)
Number of Options, Balance, end of the year (in shares)	8,846,900	7,981,000

Note 6 - Share Capital - Stock

Note 6 - Share Capital - Stock Options Outstanding (Details) - CAD / shares		May 31, 2017	May 31, 2016
Number of Options (in shares)		8,846,900	7,981,000
Exercisable at Year- End (in shares)		7,555,405	6,457,940
Employee Stock Option, Expiring on September 19, 2016 [Member]
Number of Options (in shares)		0	219,100
Exercisable at Year- End (in shares)		0	219,100
Exercise Price (in CAD per share)		CAD 0	CAD 0.50
Employee Stock Option, Expiring on November 17, 2016 [Member]
Number of Options (in shares)	[1]	210,000	210,000
Exercisable at Year- End (in shares)	[1]	210,000	210,000
Exercise Price (in CAD per share)	[1]	CAD 0.67	CAD 0.67
Employee Stock Option, Expiring on January 23, 2017 [Member]
Number of Options (in shares)		0	50,000
Exercisable at Year- End (in shares)		0	50,000
Exercise Price (in CAD per share)			CAD 1.10
Employee Stock Option, Expiring on May 1, 2017 [Member]
Number of Options (in shares)	[1]	50,000	50,000
Exercisable at Year- End (in shares)	[1]	50,000	50,000
Exercise Price (in CAD per share)	[1]	CAD 0.73	CAD 0.73
Employee Stock Option, Expiring on May 29, 2017 [Member]
Number of Options (in shares)	[1]	300,000	300,000
Exercisable at Year- End (in shares)	[1]	300,000	300,000
Exercise Price (in CAD per share)	[1]	CAD 0.92	CAD 0.92
Employee Stock Option, Expiring on September 19, 2017 [Member]
Number of Options (in shares)		2,016,900	2,016,900
Exercisable at Year- End (in shares)		2,016,900	2,016,900
Exercise Price (in CAD per share)		CAD 0.96	CAD 0.96
Employee Stock Option, Expiring on October 29, 2017 [Member]
Number of Options (in shares)		100,000	100,000
Exercisable at Year- End (in shares)		100,000	100,000
Exercise Price (in CAD per share)		CAD 0.96	CAD 0.96
Employee Stock Option, Expiring on August 16, 2018 [Member]
Number of Options (in shares)		2,120,000	2,120,000
Exercisable at Year- End (in shares)		2,120,000	2,120,000
Exercise Price (in CAD per share)		CAD 0.76	CAD 0.76
Employee Stock Option, Expiring On September 8, 2019 [Member]
Number of Options (in shares)		1,265,000	1,265,000
Exercisable at Year- End (in shares)		1,265,000	842,490
Exercise Price (in CAD per share)		CAD 1.40	CAD 1.40
Employee Stock Option, Expiring on September 9, 2020 [Member]
Number of Options (in shares)		640,000	640,000
Exercisable at Year- End (in shares)		426,240	213,120
Exercise Price (in CAD per share)		CAD 0.46	CAD 0.46
Employee Stock Option, Expiring on November 13, 2020 [Member]
Number of Options (in shares)		1,010,000	1,010,000
Exercisable at Year- End (in shares)		672,660	336,330
Exercise Price (in CAD per share)		CAD 0.49	CAD 0.49
Employee Stock Option, Expiring On June 22, 2018 [Member]
Number of Options (in shares)		50,000	0
Exercisable at Year- End (in shares)		33,300	0
Exercise Price (in CAD per share)		CAD 1.02	CAD 0
Employee Stock Option, Expiring on September 15, 2021 [Member]
Number of Options (in shares)		1,085,000	0
Exercisable at Year- End (in shares)		361,305	0
Exercise Price (in CAD per share)		CAD 0.91	CAD 0
[1]	The Company's share trading policy (the "Policy") requires that all restricted persons and others who are subject to the Policy refrain from conducting any transactions involving the purchase or sale of the Company's securities, during the period in any quarter commencing 30 days prior to the scheduled issuance of the next quarter or year-end public disclosure of the financial results as well as when there is material data on hand. In accordance with the terms of the Amended 2010 Plan, if stock options are set to expire during a restricted period and are not exercised prior to any such restriction, they will not expire but instead will be available for exercise for 10 days after such restrictions are lifted.

Note 6 - Share Capital - Valuat

Note 6 - Share Capital - Valuation Assumptions for Stock Options (Details) - Employee Stock Option [Member] - CAD / shares	12 Months Ended
	May 31, 2017	May 31, 2016
Risk-free interest rate	0.71%	0.88%
Expected life of options (in years) (Year)	4 years 317 days	5 years
Annualized volatility	85.96%	72.33%
Dividend yield	0.00%	0.00%
Exercise price (in CAD per share)	CAD 0.91	CAD 0.48
Fair value per share (in CAD per share)	CAD 0.61	CAD 0.26

Note 6 - Share Capital - Alloca

Note 6 - Share Capital - Allocation of Stock-based Compensation Expenses (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Share-based Compensation	CAD 581,379	CAD 825,921
Consulting fees [Member]
Share-based Compensation	301,884	415,360
Exploration expenditures - Geological/geophysical [Member]
Share-based Compensation	33,433	18,468
Investor relations [Member]
Share-based Compensation	73,514	96,309
Professional Fees [Member]
Share-based Compensation	6,777	16,678
Wages and Benefits [Member]
Share-based Compensation	CAD 165,771	CAD 279,106

Note 7 - Related Party Transa40

Note 7 - Related Party Transactions (Details Textual) - CAD	May 31, 2017	May 31, 2016
Accounts Payable and Accrued Liabilities	CAD 18,271	CAD 7,628

Note 7 - Related Party Transa41

Note 7 - Related Party Transactions - Transactions with Related Parties (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Consulting fees to CFO	CAD 635,152	CAD 712,943
Management compensation	1,665,601	2,141,146
Related Party Transaction [Member]
Stock-based compensation to related parties	476,664	653,520
Related Party Transaction [Member] | Chief Financial Officer [Member]
Consulting fees to CFO	110,000	105,333
Related Party Transaction [Member] | Chief Executive Officer [Member]
Wages and benefits	790,187	806,046
Related Party Transaction [Member] | President [Member]
Wages and benefits	0	234,997
Related Party Transaction [Member] | Director [Member]
Directors fees (included in consulting fees)	151,250	151,250
Related Party Transaction [Member] | Vice President [Member]
Fees to Vice President of Corporate Communications (included in investor relations)	CAD 137,500	CAD 190,000

Note 8 - Geographic Segmented42

Note 8 - Geographic Segmented Information (Details Textual)	12 Months Ended
	May 31, 2017
Number of Operating Segments	1
Number of Reportable Segments	2

Note 8 - Geographic Segmented43

Note 8 - Geographic Segmented Information - Long-lived Assets, by Geographical Areas (Details) - CAD	May 31, 2017	May 31, 2016	May 31, 2015
Capitalized acquisition costs	CAD 4,527,740	CAD 4,261,680	CAD 4,866,634
Property and equipment	69,529	82,051
Operating Segments [Member]
Capitalized acquisition costs	4,527,740	4,261,680
Property and equipment	69,529	82,051
CANADA | Operating Segments [Member]
Capitalized acquisition costs	0	0
Property and equipment	8,367	8,068
UNITED STATES | Operating Segments [Member]
Capitalized acquisition costs	4,527,740	4,261,680
Property and equipment	CAD 61,162	CAD 73,983

Note 8 - Geographic Segmented44

Note 8 - Geographic Segmented Information - Net Income (Loss) by Geographic Areas (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Net loss for the period	CAD (6,727,722)	CAD (7,434,215)
CANADA
Net loss for the period	(2,138,433)	(2,118,555)
UNITED STATES
Net loss for the period	CAD (4,589,289)	CAD (5,315,660)

Note 9 - Subsidiaries - Signifi

Note 9 - Subsidiaries - Significant Subsidiaries (Details)	12 Months Ended
	May 31, 2017	May 31, 2016
Corvus Gold (USA) Inc. [Member]
Effective Interest	100.00%	100.00%
Country of Incorporation	USA
Principal Activity	Holding company
Raven Gold Alaska Inc. [Member]
Effective Interest	100.00%	100.00%
Country of Incorporation	USA
Principal Activity	Exploration company
Corvus Gold Nevada Inc. [Member]
Effective Interest	100.00%	100.00%
Country of Incorporation	USA
Principal Activity	Exploration company
SoN Land and Water LLC [Member]
Effective Interest	100.00%	100.00%
Country of Incorporation	USA
Principal Activity	Exploration company

Note 10 - Supplemental Cash F46

Note 10 - Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Interest paid		CAD 5,113
Income taxes paid (received)
Shares issued to acquire mineral properties	18,000	11,250
Change in asset retirement obligations included in capitalized acquisition costs	37,865	153,825
Reclassification of contributed surplus on exercise of stock options	CAD 78,054	CAD 95,748

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual)	12 Months Ended
	May 31, 2017CAD
CANADA
Operating Loss Carryforwards	CAD 9,428,000
Exploration Expense, Mining	333,000
UNITED STATES
Operating Loss Carryforwards	14,778,000
Exploration Expense, Mining	CAD 55,428,000

Note 11 - Income Taxes - Reconc

Note 11 - Income Taxes - Reconciliation of Income Taxes (Details) - CAD	12 Months Ended
	May 31, 2017	May 31, 2016
Net loss for the year	CAD (6,727,722)	CAD (7,434,215)
Statutory Canadian corporate tax rate	26.00%	26.00%
Income tax recovery at statutory rates	CAD (1,749,208)	CAD (1,932,896)
Stock-based compensation	151,159	214,739
Effect of tax rate change	0
Difference in tax rates in other jurisdictions	(374,370)	(422,602)
Tax benefits not realized	1,972,419	2,140,759
Income tax recovery	CAD 0	CAD 0

Note 11 - Income Taxes - Compon

Note 11 - Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Details) - CAD	May 31, 2017	May 31, 2016
Mineral properties	CAD 17,495,000	CAD 15,907,000
Property and equipment	38,000	30,000
Share issuance costs	32,000	45,000
Non-capital losses available for future periods	7,476,000	6,451,000
Deferred Tax Assets, Gross	25,041,000	22,433,000
Valuation allowance	(25,041,000)	(22,433,000)
Net deferred tax assets

Note 11 - Income Taxes - Tax Cr

Note 11 - Income Taxes - Tax Credit Carryforwards (Details) - May 31, 2017	USD ($)	CAD
CANADA
Tax Credit Carry-forward, Amount | $	$ 9,428,000
UNITED STATES
Tax Credit Carry-forward, Amount | $	14,778,000
Tax Year 2029 [Member] | CANADA
Tax Credit Carry-forward, Amount
Tax Year 2029 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		1,291,000
Tax Year 2030 [Member] | CANADA
Tax Credit Carry-forward, Amount
Tax Year 2030 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		1,000
Tax Year 2031 [Member] | CANADA
Tax Credit Carry-forward, Amount		379,000
Tax Year 2031 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		192,000
Tax Year 2032 [Member] | CANADA
Tax Credit Carry-forward, Amount		1,089,000
Tax Year 2032 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		1,643,000
Tax Year 2033 [Member] | CANADA
Tax Credit Carry-forward, Amount		1,443,000
Tax Year 2033 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		2,168,000
Tax Year 2034 [Member] | CANADA
Tax Credit Carry-forward, Amount		1,733,000
Tax Year 2034 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		4,224,000
Tax Year 2035 [Member] | CANADA
Tax Credit Carry-forward, Amount		1,806,000
Tax Year 2035 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		1,963,000
Tax Year 2036 [Member] | CANADA
Tax Credit Carry-forward, Amount		1,354,000
Tax Year 2036 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount		CAD 1,936,000
Tax Year 2037 [Member] | CANADA
Tax Credit Carry-forward, Amount | $	1,624,000
Tax Year 2037 [Member] | UNITED STATES
Tax Credit Carry-forward, Amount | $	$ 1,360,000

Note 12 - Subsequent Events (De

Note 12 - Subsequent Events (Details Textual)	Jun. 09, 2017$ / shares$ / ozshares	Nov. 18, 2016shares	Nov. 18, 2015shares
Stock Issued During Period, Shares, Acquisitions | shares		25,000	25,000
Mother Lode Property [Member] | Subsequent Event [Member] | Goldcorp USA, Inc [Member]
Net Smelter Return, Royalty Percentage of Production Based on Specified Maximum Gold Price	1.00%
Net Smelter Return, Maximum Gold Price | $ / oz	1,400
Net Smelter Return, Additional Royalty Percentage of Production Based on Specified Minimum Gold Price	1.00%
Net Smelter Return, Total Royalty Percentage of Production	2.00%
Net Smelter Return, Minimum Gold Price | $ / oz	1,400
Mother Lode Property [Member] | Subsequent Event [Member] | Goldcorp USA, Inc [Member]
Stock Issued During Period, Shares, Acquisitions | shares	1,000,000
Shares Issued, Price Per Share | $ / shares	$ 0.81