Schedule of Mineral Property Expenditures (Details) (USD $)	9 Months Ended
	Apr. 30, 2013
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 1	$ 756,414
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 2	1,465,673
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 3	3,724,668
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 4	5,833,106
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 5	145,390
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 6	91,654
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 7	369,375
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 8	398,632
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 9	572,578
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 10	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 11	1,894,411
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 12	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 13	29,983
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 14	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 15	805,791
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 16	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 17	4,723
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 18	415,566
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 19	22,749
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 20	969,065
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 21	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 22	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 23	13,635
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 24	150,000
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 25	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 26	185,497
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 27	74,924
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 28	339,390
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 29	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 30	40,346
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 31	32,640
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 32	47,735
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 33	29,910
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 34	3,477
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 35	116,762
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 36	17,196
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 37	26,831
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 38	588,548
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 39	134,791
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 40	588,548
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 41	88,210
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 42	923,263
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 43	433,802
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 44	1,829,126
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 45	173,108
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 46	297,965
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 47	486,148
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 48	734,482
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 49	1,827,147
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 50	4,011,989
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 51	8,109,696
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 52	$ 10,907,280