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13. Income Taxes (Details 2) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Deferred tax asset: |  |
Foreign exploration costs | $ 47,011 | $ 87,494
Foreign net operating loss carryforward | 1,309,445 | 2,515,954
Federal and state net operating loss carry forward | 465,145 | 185,472
Deferred tax asset | 1,821,601 | 2,788,920
Valuation allowance (foreign) | (1,309,445) | (2,515,954)
Valuation allowance (federal) | (299,522) | (90,220)
Total deferred tax asset | 212,634 | 182,746
Deferred tax liability: |  |
Property, plant, and equipment | (210,912) | (181,224)
Other | (1,722) | (1,522)
Total deferred tax liability | (212,664) | (182,746)
Net Deferred Tax Asset | $ 0 | $ 0

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