SEGMENTED INFORMATION (Tables)

3 Months Ended

9 Months Ended

12 Months Ended

Apr. 30, 2015

Apr. 30, 2014

Apr. 30, 2015

Apr. 30, 2014

Jul. 31, 2014

Schedule of Long-Term Assets by Geographic Segment [Table Text Block]

		April 30, 2015
		United States						Canada		Paraguay		Total
Balance Sheet Items		Texas		Arizona		Other States
Deferred Financing Costs	$	104,763	$	-	$	-	$	-	$	-	$	104,763
Mineral Rights and Properties		14,038,001		10,841,861		905,728		-		13,080,555		38,866,145
Property, Plant and Equipment		7,354,159		-		-		9,427		16,674		7,380,260
Reclamation Deposits		1,690,209		15,000		816		-		-		1,706,025
Total Long-term Assets	$	23,187,132	$	10,856,861	$	906,544	$	9,427	$	13,097,229	$	48,057,193

		July 31, 2014
		United States						Canada		Paraguay		Total
Balance Sheet Items		Texas		Arizona		Other States
Deferred Financing Costs	$	167,621	$	-	$	-	$	-	$	-	$	167,621
Mineral Rights and Properties		14,732,677		10,791,861		883,606		-		13,080,555		39,488,699
Property, Plant and Equipment		7,966,833		-		465		12,960		25,079		8,005,337
Reclamation Deposits		5,662,814		15,000		815		-		-		5,678,629
Total Long-term Assets	$	28,529,945	$	10,806,861	$	884,886	$	12,960	$	13,105,634	$	53,340,286

Schedule of Operating Results by Geographic Segments [Table Text Block]

		Three Months Ended April 30, 2015
Statement of Operations		United States									Canada			Paraguay			Total
		Texas			Arizona			Other States
Sales	$	-		$	-		$	-		$	-		$	-		$	-
Costs and Expenses:
Cost of sales		-			-			-			-			-			-
Inventory write-down		-			-			-			-			-			-
Mineral property expenditures		786,935			50,119			35,199			-			173,589			1,045,842
General and administrative		2,400,403			51,889			4,368			707,481			3,755			3,167,896
Depreciation, amortization and accretion		368,448			-			501			2,741			2,392			374,082
Impairment loss on mineral property		-			-			-			-			-			-
		3,555,786			102,008			40,068			710,222			179,736			4,587,820
Loss from operations		(3,555,786	)		(102,008	)		(40,068	)		(710,222	)		(179,736	)		(4,587,820	)
Other income (expenses)		(759,273	)		(4,640	)		-			-			169			(763,744	)
Loss before income taxes	$	(4,315,059	)	$	(106,648	)	$	(40,068	)	$	(710,222	)	$	(179,567	)	$	(5,351,564	)

		Three Months Ended April 30, 2014
Statement of Operations		United States									Canada			Paraguay			Total
		Texas			Arizona			Other States
Sales	$	-		$	-		$	-		$	-		$	-		$	-
Costs and Expenses:
Cost of sales		-			-			-			-			-			-
Inventory write-down		338,101			-			-			-			-			338,101
Mineral property expenditures		2,060,823			49,218			23,533			-			605,775			2,739,349
General and administrative		993,390			37,501			12,751			776,584			(11,831	)		1,808,395
Depreciation, amortization and accretion		568,521			-			780			4,713			3,031			577,045
Impairment loss on mineral property		428,164			-			-			-			-			428,164
		4,388,999			86,719			37,064			781,297			596,975			5,891,054
Loss from operations		(4,388,999	)		(86,719	)		(37,064	)		(781,297	)		(596,975	)		(5,891,054	)
Other income (expenses)		(801,086	)		(5,020	)		-			36			17			(806,053	)
Loss before income taxes	$	(5,190,085	)	$	(91,739	)	$	(37,064	)	$	(781,261	)	$	(596,958	)	$	(6,697,107	)

		Nine Months Ended April 30, 2015
Statement of Operations		United States									Canada			Paraguay			Total
		Texas			Arizona			Other States
Sales	$	-		$	-		$	-		$	-		$	-		$	-
Costs and Expenses:
Cost of sales		-			-			-			-			-			-
Inventory write-down		-			-			-			-			-			-
Mineral property expenditures		3,431,826			207,586			191,718			-			729,111			4,560,241
General and administrative		7,456,500			148,766			18,393			2,069,664			18,610			9,711,933
Depreciation, amortization and accretion		1,420,996			-			1,968			9,238			8,606			1,440,808
Impairment loss on mineral property		-			-			-			-			-			-
		12,309,322			356,352			212,079			2,078,902			756,327			15,712,982
Loss from operations		(12,309,322	)		(356,352	)		(212,079	)		(2,078,902	)		(756,327	)		(15,712,982	)
Other income (expenses)		(2,249,325	)		(15,018	)		-			(120	)		484			(2,263,979	)
Loss before income taxes	$	(14,558,647	)	$	(371,370	)	$	(212,079	)	$	(2,079,022	)	$	(755,843	)	$	(17,976,961	)

		Nine Months Ended April 30, 2014
Statement of Operations		United States									Canada			Paraguay			Total
		Texas			Arizona			Other States
Sales	$	-		$	-		$	-		$	-		$	-		$	-
Costs and Expenses:
Cost of sales		-			-			-			-			-			-
Inventory write-down		730,250			-			-			-			-			730,250
Mineral property expenditures		5,676,286			230,749			173,757			-			830,720			6,911,512
General and administrative		4,165,060			182,147			77,714			2,766,689			5,054			7,196,664
Depreciation, amortization and accretion		1,729,640			758			6,690			19,944			8,973			1,766,005
Impairment loss on mineral property		428,164			-			28,891			-			-			457,055
		12,729,400			413,654			287,052			2,786,633			844,747			17,061,486
Loss from operations		(12,729,400	)		(413,654	)		(287,052	)		(2,786,633	)		(844,747	)		(17,061,486	)
Other income (expenses)		(2,676,947	)		(15,398	)		-			(2,154	)		50			(2,694,449	)
Loss before income taxes	$	(15,406,347	)	$	(429,052	)	$	(287,052	)	$	(2,788,787	)	$	(844,697	)	$	(19,755,935	)