MINERAL PROPERTIES (Details 1) - CAD	9 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 2,436,217	CAD 4,440,272
Cost recovery	(136,058)
Costs Incurred for Exploration and Evaluation Activities, Net	2,300,159
West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	181	17,214
Cost recovery	(23,802)
Costs Incurred for Exploration and Evaluation Activities, Net	(23,621)
Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	20,904	117,604
Cost recovery	(7,418)
Costs Incurred for Exploration and Evaluation Activities, Net	13,486
North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	2,377,413	4,246,368
Cost recovery	0
Costs Incurred for Exploration and Evaluation Activities, Net	2,377,413
LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	37,719	59,086
Cost recovery	(104,838)
Costs Incurred for Exploration and Evaluation Activities, Net	(67,119)
Aircraft Services [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		11,202
Aircraft Services [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Aircraft Services [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		11,202
Aircraft Services [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Aircraft Services [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross		0
Assay [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	666,700	839,867
Assay [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Assay [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	12,924
Assay [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	666,700	826,943
Assay [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	655,117	1,282,967
Drilling [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Drilling [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	655,117	1,282,967
Drilling [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Equipment rental [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	33,256	225,866
Equipment rental [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Equipment rental [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	1,466
Equipment rental [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	33,256	224,400
Equipment rental [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Field Costs [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	87,719	266,060
Field Costs [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	181	2,027
Field Costs [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	247	7,096
Field Costs [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	86,757	256,653
Field Costs [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	534	284
Geological Geophysical [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	273,818	812,169
Geological Geophysical [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	4,164
Geological Geophysical [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	6,210	1,811
Geological Geophysical [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	265,454	777,024
Geological Geophysical [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	2,154	29,170
Land Maintenance Tenure [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	353,388	344,195
Land Maintenance Tenure [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	11,023
Land Maintenance Tenure [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	13,534	77,972
Land Maintenance Tenure [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	306,954	227,869
Land Maintenance Tenure [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	32,900	27,331
Permits [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	632
Permits [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0
Permits [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0
Permits [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	632
Permits [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0
Studies [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	310,893	487,020
Studies [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Studies [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Studies [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	310,893	487,020
Studies [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	2,131	878
Transportation [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Transportation [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	2,131	878
Travel [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	52,563	170,048
Travel [Member] | West Pogo [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	0	0
Travel [Member] | Chisna [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	913	5,133
Travel [Member] | North Bullfrog [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	51,650	163,492
Travel [Member] | LMS Property [Member]
Costs Incurred for Exploration and Evaluation Activities, Gross	CAD 0	CAD 1,423