Schedule of Reclamation Deposits (Details) (USD $)	9 Months Ended
	Apr. 30, 2013
Reclamation Deposits Schedule Of Reclamation Deposits 1	$ 3,627,562
Reclamation Deposits Schedule Of Reclamation Deposits 2	3,135,380
Reclamation Deposits Schedule Of Reclamation Deposits 3	1,910,494
Reclamation Deposits Schedule Of Reclamation Deposits 4	1,910,494
Reclamation Deposits Schedule Of Reclamation Deposits 5	472,823
Reclamation Deposits Schedule Of Reclamation Deposits 6	472,823
Reclamation Deposits Schedule Of Reclamation Deposits 7	15,000
Reclamation Deposits Schedule Of Reclamation Deposits 8	15,000
Reclamation Deposits Schedule Of Reclamation Deposits 9	814
Reclamation Deposits Schedule Of Reclamation Deposits 10	813
Reclamation Deposits Schedule Of Reclamation Deposits 11	6,026,693
Reclamation Deposits Schedule Of Reclamation Deposits 12	5,534,510
Reclamation Deposits Schedule Of Reclamation Deposits 13	13,466
Reclamation Deposits Schedule Of Reclamation Deposits 14	8,530
Reclamation Deposits Schedule Of Reclamation Deposits 15	6,040,159
Reclamation Deposits Schedule Of Reclamation Deposits 16	$ 5,543,040