MINERAL RIGHTS AND PROPERTIES (Details Textual)	12 Months Ended
	Jul. 31, 2017 USD ($) a shares	Jul. 31, 2016 USD ($)	Jul. 31, 2015 USD ($)
Exploration Abandonment and Impairment Expense	$ 297,942	$ 97,114	$ 349,805
Asset Retirement Obligation, Revision of Estimate	(344,385)
Revaluation of Asset Retirement Obligations	187,255	308,398	$ 0
Annual Property Maintenance Fees	146,000
Mineral Properties, Gross	42,755,064	41,728,434
Mineral Properties, Accumulated Depletion	3,929,884	3,929,884
Stock Issued During Period Value For Mineral Properties	48,672
Palangana Mine [Member]
Asset Retirement Obligation, Revision of Estimate	157,130	144,107
Revaluation of Asset Retirement Obligations	$ 187,255
Area of Land | a	6,987
Mineral Properties, Gross	$ 6,285,898	6,443,028
Mineral Properties, Accumulated Depletion	3,929,884	3,929,884
Mineral Rights Net Of Accumulated Depletion	2,356,014	2,513,144
Mining Properties and Mineral Rights [Member]
Annual Property Maintenance Fees	$ 1,625,000
Goliad Project [Member]
Area of Land | a	1,139
Mineral Properties, Gross	$ 8,689,127	8,689,127
Burke Hollow Project [Member]
Area of Land | a	19,335
Mineral Properties, Gross	$ 1,495,750	1,495,750
Longhorn Project [Member]
Area of Land | a	651
Mineral Properties, Gross	$ 116,870	116,870
Salvo Project [Member]
Area of Land | a	1,514
Mineral Properties, Gross	$ 14,905	14,905
Anderson Project [Member]
Area of Land | a	8,268
Mineral Properties, Gross	$ 9,154,268	9,154,268
Interest on Property	100.00%
Workman Creek Project [Member]
Area of Land | a	4,036
Mineral Properties, Gross	$ 1,520,680	1,472,008
Lease Terms, Description	The Workman Creek Project is subject to a 3.0% net smelter royalty requiring an annual advance royalty payment of $50,000 for 2016 and 2017, and $100,000 thereafter. The Company has an exclusive right and option to acquire one-half (1.5%) of the net smelter royalty for $1,000,000 at any time until January 21, 2024. Additionally, certain individuals hold an option to acquire a 0.5% net smelter royalty exercisable by paying the Company the sum of $333,340 at any time until January 21, 2024.
Interest on Property	100.00%
Stock Issued During Period Shares For Mineral Properties | shares	46,800
Stock Issued During Period Value For Mineral Properties	$ 48,672
Los Cuatros Project [Member]
Area of Land | a	640
Mineral Properties, Gross	$ 257,250	257,250
Interest on Property	100.00%
Slick Rock Project [Member]
Exploration Abandonment and Impairment Expense		45,621
Area of Land | a	5,333
Mineral Properties, Gross	$ 615,650	615,650
Lease Terms, Description	Certain claims of the Slick Rock Project are subject to a 1.0% or 3.0% net smelter royalty, the latter requiring an annual advance royalty payment of $30,000 beginning in November 2017.
Interest on Property	100.00%
Yuty Project [Member]
Area of Land | a	289,680
Mineral Properties, Gross	$ 11,947,144	11,947,144
Overriding Royalty, per pound	0.21
Interest on Property	100.00%
Oviedo Project [Member]
Area of Land | a	464,548
Mineral Properties, Gross	$ 1,133,412	1,133,412
Lease Terms, Description	The Oviedo Project is subject to a 1.5% gross overriding royalty over which the Company has an exclusive right and option at any time to acquire one-half percent (0.5%) for $166,667 and a right of first refusal to acquire all or any portion of the remaining one percent (1.0%). At July 31, 2017,
Interest on Property	100.00%
Workman Creek Project, Arizona [Member]
Mineral Properties, Gross	$ 615,650	$ 615,650