CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $)	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
SALES	$ 0	$ 2,103,750	$ 0	$ 4,257,000
COSTS AND EXPENSES
Cost of sales	0	2,091,285	0	3,954,394
Inventory write-down	0	0	392,149	0
Mineral property expenditures	2,584,020	1,905,264	4,172,163	6,282,549
General and administrative	3,082,480	3,307,664	5,388,269	6,032,601
Depreciation, amortization and accretion	647,881	375,236	1,188,960	871,583
Impairment loss on mineral property	0	0	28,891	0
TOTAL OPERATING EXPENSES	6,314,381	7,679,449	11,170,432	17,141,127
LOSS FROM OPERATIONS	(6,314,381)	(5,575,699)	(11,170,432)	(12,884,127)
OTHER INCOME (EXPENSES)
Interest income	8,004	9,654	13,330	24,232
Interest and finance costs	(832,088)	(5,189)	(1,629,535)	(11,299)
Gain (loss) on disposition of assets	(2,553)	4,963	(2,553)	4,963
Loss on fair value of variable share forward contract	(36,839)	0	(268,601)	0
Gain on settlement of accounts payable	0	0	0	10,909
Loss on settlement of asset retirement obligations	(1,037)	(21,939)	(1,037)	(30,511)
TOTAL OTHER INCOME (EXPENSES)	(864,513)	(12,511)	(1,888,396)	(1,706)
NET LOSS FOR THE PERIOD	(7,178,894)	(5,588,210)	(13,058,828)	(12,885,833)
OTHER COMPREHENSIVE LOSS, NET OF INCOME TAXES	(4,026)	(3,678)	(6,327)	(4,159)
TOTAL COMPREHENSIVE LOSS FOR THE PERIOD	$ (7,182,920)	$ (5,591,888)	$ (13,065,155)	$ (12,889,992)
NET LOSS PER SHARE, BASIC AND DILUTED	$ (0.08)	$ (0.06)	$ (0.15)	$ (0.15)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING, BASIC AND DILUTED	89,701,157	85,293,298	88,058,149	85,233,112