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MINERAL RIGHTS AND PROPERTIES (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Exploration Abandonment and Impairment Expense $ 0 $ 0 $ 297,942 $ 86,535
Revaluation of Asset Retirement Obligations     0 184,381
Common stock Issued for mineral property     48,672  
Exploration Expense, Mining 999,241 $ 725,968 2,956,805 3,408,813
Palangana Mine [Member]        
Asset Retirement Obligation, Revision of Estimate       24,787
Revaluation of Asset Retirement Obligations       $ 184,381
Mining Properties and Mineral Rights [Member]        
Payment to Maintain Mineral Properties in Good Standing     1,228,000  
Projects Located Arizona, Colorado and New Mexico [Member]        
Exploration Abandonment and Impairment Expense     $ 297,942  
Workman Creek Project [Member] | Restricted Stock [Member]        
Issued for Mineral Property (in shares)     46,800  
Common stock Issued for mineral property     $ 48,672  
Alto Parana Project [Member]        
Exploration Expense, Mining $ 95,460   $ 618,093