INCOME TAXES (Details 3) - USD ($)	Jul. 31, 2016	Jul. 31, 2015
Deferred tax assets (liabilities)
Mineral property acquisitions	$ 1,917,796	$ 1,867,777
Exploration costs	10,648,043	10,931,265
Stock option expense	7,081,853	5,771,387
Depreciable property	(66,912)	78,651
Inventories	(3,632,178)	(2,530,383)
Asset retirement obligations	(220,209)	(316,136)
Other	271,468	333,026
Loss carry forward	49,565,476	43,802,183
Deferred Tax Assets, Gross	65,565,337	59,937,770
Valuation allowance	(65,570,544)	(59,942,938)
Deferred tax assets	(5,207)	(5,168)
Deferred tax assets, other comprehensive loss	5,207	5,168
Deferred tax liabilities
Mineral property acquisition	(643,825)	(676,064)
Net deferred tax liabilities	$ (643,825)	$ (676,064)