Statement of Stockholders Equity (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Share Subscription 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 on the exercise of options and warrants	33	15,031				15,064
Common stock issued on settlement of convertible debenturess	72	385,155				385,227
Common stock issued on settlement of convertible debenturess (Shares)	72,703
Common stock issued pursuant on acquistion of mineral properties	1,904	6,108,893				6,110,797
Common stock issued pursuant on acquistion of mineral properties (Shares)	1,903,440
Common stock issued pursuant to database acquisition	159	510,988				511,147
Common stock issued pursuant to database acquisition (Shares)	159,236
Options issued for consulting services		576,215				576,215
Common stock issued pursuant to consulting service agreements	20	62,580				62,600
Common stock issued pursuant to consulting service agreements (Shares)	20,000
Options issued for managment fees		834,219				834,219
Options issued for wages and benefits		839,290				839,290
Common stock issued on the exercise of warrants (Shares)	32,435
Net loss for the period				(12,105,556)		(12,105,556)
Unrealized loss on available-for-sale securities					(14,185)	(14,185)
Ending Balance at Jan. 31, 2012	$ 75,675	$ 163,896,577	$ 194,700	$ (107,845,784)	$ 16,441	$ 56,337,609
Ending Balance (Shares) at Jan. 31, 2012	75,675,151