SEGMENTED INFORMATION (Details) - USD ($)	Jul. 31, 2016	Jul. 31, 2015
Mineral Rights and Properties	$ 37,973,951	$ 38,437,967
Property, Plant and Equipment	6,942,304	6,948,647
Reclamation Deposits	1,706,027	1,706,025
Other Long-Term Assets	1,553,388	0
Total Long-Term Assets	48,175,670	47,092,639
United States Texas [Member]
Mineral Rights and Properties	13,191,408	13,555,492
Property, Plant and Equipment	6,573,079	6,926,682
Reclamation Deposits	1,690,209	1,690,209
Other Long-Term Assets	0
Total Long-Term Assets	21,454,696	22,172,383
United States Arizona [Member]
Mineral Rights and Properties	10,891,861	10,891,861
Property, Plant and Equipment	0	0
Reclamation Deposits	15,000	15,000
Other Long-Term Assets	0
Total Long-Term Assets	10,906,861	10,906,861
United States Other States [Member]
Mineral Rights and Properties	810,127	910,059
Property, Plant and Equipment	0	0
Reclamation Deposits	818	816
Other Long-Term Assets	0
Total Long-Term Assets	810,945	910,875
Canada [Member]
Mineral Rights and Properties	0	0
Property, Plant and Equipment	14,909	7,502
Reclamation Deposits	0	0
Other Long-Term Assets	0
Total Long-Term Assets	14,909	7,502
Paraguay [Member]
Mineral Rights and Properties	13,080,555	13,080,555
Property, Plant and Equipment	354,316	14,463
Reclamation Deposits	0	0
Other Long-Term Assets	1,553,388
Total Long-Term Assets	$ 14,988,259	$ 13,095,018