SEGMENTED INFORMATION (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016
Sales	$ 0	$ 0	$ 0	$ 0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	60,694	0
Mineral property expenditures	1,067,446	893,825	1,957,564	2,682,845
General and administrative	2,241,247	2,805,811	4,523,485	5,081,204
Depreciation, amortization and accretion	128,255	232,186	279,607	475,085
Impairment loss on mineral properties	154,774	86,535	297,942	86,535
Total Cost and Expenses	3,591,722	4,018,357	7,119,292	8,325,669
Loss from operations	(3,591,722)	(4,018,357)	(7,119,292)	(8,325,669)
Other income (expenses)	(749,207)	(789,242)	(1,483,147)	(1,562,400)
Loss before income taxes	(4,340,929)	(4,807,599)	(8,602,439)	(9,888,069)
United States Texas [Member]
Sales	0	0	0	0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	60,694	0
Mineral property expenditures	449,523	564,316	948,807	1,851,518
General and administrative	1,607,974	2,098,910	3,265,437	3,648,603
Depreciation, amortization and accretion	127,022	227,361	275,067	466,348
Impairment loss on mineral properties	154,774	0	185,942	0
Total Cost and Expenses	2,339,293	2,890,587	4,735,947	5,966,469
Loss from operations	(2,339,293)	(2,890,587)	(4,735,947)	(5,966,469)
Other income (expenses)	(744,042)	(785,298)	(1,473,252)	(1,553,694)
Loss before income taxes	(3,083,335)	(3,675,885)	(6,209,199)	(7,520,163)
United States Arizona [Member]
Sales	0	0	0	0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	0	0
Mineral property expenditures	22,751	56,379	46,512	209,903
General and administrative	5,340	42,538	26,983	74,992
Depreciation, amortization and accretion	0	0	0	0
Impairment loss on mineral properties	0	0	8,334	0
Total Cost and Expenses	28,091	98,917	81,829	284,895
Loss from operations	(28,091)	(98,917)	(81,829)	(284,895)
Other income (expenses)	(4,768)	(4,768)	(9,535)	(9,535)
Loss before income taxes	(32,859)	(103,685)	(91,364)	(294,430)
United States Other States [Member]
Sales	0	0	0	0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	0	0
Mineral property expenditures	14,868	27,771	32,830	132,150
General and administrative	1,068	708	2,135	1,663
Depreciation, amortization and accretion	249	750	498	1,500
Impairment loss on mineral properties	0	86,535	103,666	86,535
Total Cost and Expenses	16,185	115,764	139,129	221,848
Loss from operations	(16,185)	(115,764)	(139,129)	(221,848)
Other income (expenses)	0	0	0	0
Loss before income taxes	(16,185)	(115,764)	(139,129)	(221,848)
Canada [Member]
Sales	0	0	0	0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	0	0
Mineral property expenditures	0	0	0	0
General and administrative	614,851	661,608	1,193,708	1,350,986
Depreciation, amortization and accretion	1,991	2,386	3,968	3,632
Impairment loss on mineral properties	0	0	0	0
Total Cost and Expenses	616,842	663,994	1,197,676	1,354,618
Loss from operations	(616,842)	(663,994)	(1,197,676)	(1,354,618)
Other income (expenses)	(399)	818	(399)	818
Loss before income taxes	(617,241)	(663,176)	(1,198,075)	(1,353,800)
Paraguay [Member]
Sales	0	0	0	0
Costs and Expenses:
Cost of sales	0	0	0	0
Inventory write-down	0	0	0	0
Mineral property expenditures	580,304	245,359	929,415	489,274
General and administrative	12,014	2,047	35,222	4,960
Depreciation, amortization and accretion	(1,007)	1,689	74	3,605
Impairment loss on mineral properties	0	0	0	0
Total Cost and Expenses	591,311	249,095	964,711	497,839
Loss from operations	(591,311)	(249,095)	(964,711)	(497,839)
Other income (expenses)	2	6	39	11
Loss before income taxes	$ (591,309)	$ (249,089)	$ (964,672)	$ (497,828)