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Capitalized Acquisition Costs on Mineral Properties (Details) - USD ($)
Jun. 30, 2015
Jun. 30, 2014
Mineral Properties [Line Items]    
Mineral properties, net $ 28,036,135 $ 28,373,535
Sleeper    
Mineral Properties [Line Items]    
Mineral properties, net 25,554,090 25,891,490
Mill Creek    
Mineral Properties [Line Items]    
Mineral properties, net 2,096,616 2,096,616
Spring Valley    
Mineral Properties [Line Items]    
Mineral properties, net $ 385,429 $ 385,429