MINERAL RIGHTS AND PROPERTIES (Details 1) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Mineral property expenditures	$ 999,241	$ 725,968	$ 2,956,805	$ 3,408,813
Revaluation of Asset Retirement Obligations			0	(184,381)
Mineral Property Expenditures, Net	999,241	725,968	2,956,805	3,408,813
Palangana Mine [Member]
Mineral property expenditures	239,781	280,345	625,430	1,031,625
Goliad Project [Member]
Mineral property expenditures	40,295	26,848	90,174	71,679
Burke Hollow Project [Member]
Mineral property expenditures	288,742	48,409	439,058	974,661
Longhorn Project [Member]
Mineral property expenditures	23,724	247	24,777	4,620
Salvo Project [Member]
Mineral property expenditures	6,701	4,622	21,710	21,697
Anderson Project [Member]
Mineral property expenditures	30,489	3,564	45,993	170,780
Workman Creek Project [Member]
Mineral property expenditures	7,673	418	23,593	32,109
Slick Rock Project [Member]
Mineral property expenditures	12,207	0	36,759	53,861
Yuty Project [Member]
Mineral property expenditures	91,175	89,246	282,887	291,788
Oviedo Project [Member]
Mineral property expenditures	58,054	136,031	273,124	422,763
Alto Parana Project [Member]
Mineral property expenditures	95,460	0	618,093	0
Other Mineral Property [Member]
Mineral property expenditures	104,940	136,238	475,207	517,611
Revaluation of Asset Retirement Obligations [Member]
Revaluation of Asset Retirement Obligations	$ 0	$ 0	$ 0	$ (184,381)