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