SEGMENTED INFORMATION (Details) - USD ($)	Oct. 31, 2017	Jul. 31, 2017
Mineral Rights and Properties	$ 64,534,247	$ 38,931,976
Property, Plant and Equipment	7,140,701	6,791,182
Reclamation Deposits	1,780,001	1,706,028
Equity-Accounted Investment	260,465	151,676
Other Long-Term Assets	634,362	1,004,975
Total Long-Term Assets	74,349,776	48,585,837
United States Texas [Member]
Mineral Rights and Properties	12,767,622	12,780,728
Property, Plant and Equipment	6,402,159	6,414,329
Reclamation Deposits	1,690,209	1,690,209
Equity-Accounted Investment	0	0
Other Long-Term Assets	328,642	422,769
Total Long-Term Assets	21,188,632	21,308,035
United States Arizona [Member]
Mineral Rights and Properties	10,994,018	10,932,199
Property, Plant and Equipment	0	0
Reclamation Deposits	15,000	15,000
Equity-Accounted Investment	0	0
Other Long-Term Assets	0	0
Total Long-Term Assets	11,009,018	10,947,199
United States Wyoming [Member]
Mineral Rights and Properties	25,553,807	0
Property, Plant and Equipment	369,847	0
Reclamation Deposits	74,792	0
Equity-Accounted Investment	0	0
Other Long-Term Assets	305,720	582,206
Total Long-Term Assets	26,304,166	582,206
United States Other States [Member]
Mineral Rights and Properties	705,215	705,464
Property, Plant and Equipment	0	0
Reclamation Deposits	0	819
Equity-Accounted Investment	0	0
Other Long-Term Assets	0	0
Total Long-Term Assets	705,215	706,283
Canada [Member]
Mineral Rights and Properties	0	0
Property, Plant and Equipment	10,022	11,185
Reclamation Deposits	0	0
Equity-Accounted Investment	260,465	151,676
Other Long-Term Assets	0	0
Total Long-Term Assets	270,487	162,861
Paraguay [Member]
Mineral Rights and Properties	14,513,585	14,513,585
Property, Plant and Equipment	358,673	365,668
Reclamation Deposits	0	0
Equity-Accounted Investment	0	0
Other Long-Term Assets	0	0
Total Long-Term Assets	$ 14,872,258	$ 14,879,253