Schedule of Mineral Property Expenditures (Details) (USD $)	6 Months Ended
	Jan. 31, 2013
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 1	$ 1,144,391
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 2	2,531,871
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 3	2,968,254
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 4	4,367,433
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 5	119,983
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 6	210,040
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 7	223,985
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 8	306,978
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 9	218,900
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 10	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 11	1,321,833
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 12	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 13	84,547
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 14	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 15	775,808
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 16	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 17	165
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 18	448,922
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 19	18,026
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 20	553,499
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	202
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 26	34,435
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 27	74,924
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 28	153,893
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 29	1,704
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 30	7,389
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 31	32,640
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 32	7,389
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 33	31,842
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 34	1,147
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 35	86,852
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 36	13,719
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 37	16,689
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 38	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 39	107,960
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 40	0
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 41	145,790
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 42	642,496
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 43	345,592
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 44	905,863
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 45	141,051
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 46	286,390
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 47	313,040
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 48	436,517
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 49	1,905,264
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 50	4,162,690
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 51	6,282,549
Mineral Rights And Properties Schedule Of Mineral Property Expenditures 52	$ 6,895,291