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Stock Based Compensation Allocation of Recognized Period Costs (Details) - USD ($)
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 21,400 $ 438,000
Total stock-based compensation expense 507,684 724,743
Exploration expenses [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 0 241,663
Stock-based compensation expense [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 507,684 $ 483,080