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Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Document and Entity Information [Abstract]  
Entity Registrant Name North American Nickel Inc.
Entity Central Index Key 0000795800
Document Type 20-F/A
Document Period End Date Dec. 31, 2017
Amendment Flag false
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Non-accelerated Filer
Entity Common Stock, Shares Outstanding 555,189,098
Document Fiscal Year Focus 2017
Document Fiscal Period Focus FY