Schedule of Mineral Rights and Property Acquisition Costs (Details) (USD $)	6 Months Ended
	Jan. 31, 2014
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 1	$ 6,664,260
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 2	7,045,457
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 3	8,689,127
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 4	8,689,127
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 5	1,313,250
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 6	1,313,250
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 7	428,164
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 8	428,164
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 9	364,710
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 10	363,645
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 11	154,774
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 12	154,774
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 13	9,154,268
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 14	9,154,268
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 15	1,287,158
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 16	1,287,158
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 17	257,250
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 18	257,250
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 19	171,271
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 20	163,213
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 21	166,720
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 22	166,720
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 23	11,947,144
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 24	11,947,144
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 25	1,133,412
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 26	1,133,412
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 27	1,109,825
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 28	1,067,148
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 29	42,841,333
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 30	43,170,730
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 31	(28,891)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 32	0
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 33	42,812,442
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 34	43,170,730
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 35	(2,963,499)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 36	(2,278,053)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 37	39,848,943
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 38	40,892,677
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 39	2,405,038
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 40	2,345,038
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 41	(1,805,779)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 42	(1,685,011)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 43	599,259
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 44	660,027
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 45	390,155
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 46	390,155
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 47	(176,513)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 48	(157,007)
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 49	213,642
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 50	233,148
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 51	40,661,844
Mineral Rights And Properties Schedule Of Mineral Rights And Property Acquisition Costs 52	$ 41,785,852