CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Share Issuance Obligation [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Total
Beginning Balance at Jul. 31, 2011	$ 73,487	$ 154,564,206	$ 194,700	$ (95,740,228)	$ 30,626	$ 59,122,791
Beginning Balance (Shares) at Jul. 31, 2011	73,487,337
Common stock issued for equity financing	6,285	20,962,458				20,968,743
Common stock issued for equity financing (Shares)	6,284,770
Common stock issued for exercise of stock options and warrants	305	553,815				554,120
Common stock issued for exercise of stock options and warrants (Shares)	304,323
Common stock issued for settlement of convertible debtentures	128	699,212				699,340
Common stock issued for settlement of convertible debtentures (Shares)	128,508
Common stock issued for mineral property acquisition	4,521	15,953,311				15,957,832
Common stock issued for mineral property acquisition (Shares)	4,520,669
Common stock issued for database acquisition	159	510,989				511,148
Common stock issued for database acquisition (Shares)	159,236
Common stock issued for settlement of current liabilities	40	158,386				158,426
Common stock issued for settlement of current liabilities (Shares)	40,312
Common stock issued for consulting services	50	167,324				167,374
Common stock issued for consulting services (Shares)	50,000
Options issued for consulting services		763,848				763,848
Options issued for management fees		834,219				834,219
Options issued for employees benefits		1,144,062				1,144,062
Options issued for mineral property acquisition		76,442				76,442
Broker options issued for mineral property acquisition		28,149				28,149
Warrants issued for mineral property acquisition		70,460				70,460
Net loss for the year				(25,083,720)		(25,083,720)
Other comprehensive loss					(52,753)	(52,753)
Ending Balance at Jul. 31, 2012	84,975	196,486,881	194,700	(120,823,948)	(22,127)	75,920,481
Ending Balance (Shares) at Jul. 31, 2012	84,975,155
Common stock issued for debt financing	408	1,064,992				1,065,400
Common stock issued for debt financing (Shares)	407,239
Common stock issued for exercise of stock options and warrants	461	46,003				46,464
Common stock issued for exercise of stock options and warrants (Shares)	459,891
Common stock issued for Everest Settlement Agreement	56	194,644	(194,700)
Common stock issued for Everest Settlement Agreement (Shares)	55,000
Common stock issued for Yuty Settlement Agreement	76	190,424				190,500
Common stock issued for Yuty Settlement Agreement (Shares)	75,000
Common stock issued for consulting services	60	119,940				120,000
Common stock issued for consulting services (Shares)	60,000
Options issued for consulting services		297,400				297,400
Options issued for employees benefits		407,887				407,887
Warrants issued for debt financing		1,237,910				1,237,910
Net loss for the year				(21,863,091)		(21,863,091)
Other comprehensive loss					22,127	22,127
Ending Balance at Jul. 31, 2013	86,036	200,046,081		(142,687,039)		57,445,078
Ending Balance (Shares) at Jul. 31, 2013	86,032,285
Common stock issued for equity financing	3,381	5,944,411				5,947,792
Common stock issued for equity financing (Shares)	3,380,954
Common stock issued for debt financing	388	675,670				676,058
Common stock issued for debt financing (Shares)	386,834
Common stock issued for exercise of stock options	471	26,930				27,401
Common stock issued for exercise of stock options (Shares)	470,492
Common stock issued for advance royalty payment	30	34,820				34,850
Common stock issued for advance royalty payment (Shares)	30,304
Common stock issued for bonuses	30	54,970				55,000
Common stock issued for bonuses (Shares)	30,386
Common stock issued for consulting services	636	1,101,296				1,101,932
Common stock issued for consulting services (Shares)	635,303
Options issued for consulting services		74,992				74,992
Warrants issued for equity financing		584,331				584,331
Options issued for employees benefits		82,321				82,321
Amendment of debt financing related instruments		(617,510)				(617,510)
Net loss for the year				(25,975,107)		(25,975,107)
Other comprehensive loss					(13,539)	(13,539)
Ending Balance at Jul. 31, 2014	$ 90,972	$ 208,008,312		$ (168,662,146)	$ (13,539)	$ 39,423,599
Ending Balance (Shares) at Jul. 31, 2014	90,966,558