SEGMENTED INFORMATION (Details) - USD ($)	Jul. 31, 2018	Jul. 31, 2017
Mineral Rights and Properties	$ 71,122,576	$ 38,931,976
Property, Plant and Equipment	7,101,552	6,791,182
Reclamation Deposits	1,789,899	1,706,028
Equity-Accounted Investment	693,502	151,676
Other Long-Term Assets	563,052	1,004,975
Total Long-Term Assets	81,270,581	48,585,837
United States Texas [Member]
Mineral Rights and Properties	12,729,697	12,780,728
Property, Plant and Equipment	6,362,608	6,414,329
Reclamation Deposits	1,700,926	1,690,209
Equity-Accounted Investment	0	0
Other Long-Term Assets	416,519	422,769
Total Long-Term Assets	21,209,750	21,308,035
United States Arizona [Member]
Mineral Rights and Properties	11,069,018	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	11,084,018	10,947,199
United States Wyoming [Member]
Mineral Rights and Properties	31,527,870	0
Property, Plant and Equipment	357,392	0
Reclamation Deposits	73,973	819
Equity-Accounted Investment	0	0
Other Long-Term Assets	146,533	582,206
Total Long-Term Assets	32,105,768	583,025
United States Other States [Member]
Mineral Rights and Properties	735,468	705,464
Property, Plant and Equipment	0	0
Reclamation Deposits	0	0
Equity-Accounted Investment	0	0
Other Long-Term Assets	0	0
Total Long-Term Assets	735,468	705,464
Canada [Member]
Mineral Rights and Properties	546,938	0
Property, Plant and Equipment	25,889	11,185
Reclamation Deposits	0	0
Equity-Accounted Investment	693,502	151,676
Other Long-Term Assets	0	0
Total Long-Term Assets	1,266,329	162,861
Paraguay [Member]
Mineral Rights and Properties	14,513,585	14,513,585
Property, Plant and Equipment	355,663	365,668
Reclamation Deposits	0	0
Equity-Accounted Investment	0	0
Other Long-Term Assets	0	0
Total Long-Term Assets	$ 14,869,248	$ 14,879,253