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Costs Incurred (Tables)
9 Months Ended
Mar. 31, 2016
Mineral Industries Disclosures [Abstract]  
Costs to Acquire and Explore the Properties
Costs to acquire and explore our Tetlin Lease and other properties were as follows: 
 
 
Three Months Ended March 31,
 
Nine Months Ended March 31,
 
 
2016
 
2015
 
2016
 
2015
Exploration costs, claim rentals, and minimum royalties
 
$

 
$
180,791

 
$
14,425

 
475,527

Total costs incurred
 
$

 
$
180,791

 
$
14,425

 
$
475,527