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Costs Incurred (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Nov. 29, 2010 a
Costs Incurred to acquire and explore mining properties [Line Items] |  |  |  |  |
Exploration costs and claim rentals | $ 0 | $ 180,791 | $ 14,425 | $ 475,527 |
Total costs incurred | $ 0 | $ 180,791 | $ 14,425 | $ 475,527 |
Native Village of Tetlin Land [Member] |  |  |  |  |
Costs Incurred to acquire and explore mining properties [Line Items] |  |  |  |  |
Initial and Renewal Terms of Leases and Concessions on Undeveloped Acreage | 10 years |  | 10 years |  |
Leasehold Interest Acreage | a |  |  |  |  | 675,000

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- Definition [Line Items] for Costs Incurred to acquire and explore mining properties [Table] + References No definition available. + Details
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- Definition The sum of the both capitalized costs incurred and costs expensed during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs for mining properties. + References No definition available. + Details
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- Definition Exploration expenses (including prospecting) and claim rentals related to the mining industry would be included in operating expenses. Exploration costs include costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of mineral reserves. + References No definition available. + Details
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- Details
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