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14. Income Taxes (Details 2) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Deferred tax asset:    
Foreign exploration costs $ 87,494 $ 127,936
Foreign net operating loss carryforward 2,515,954 1,926,341
Federal and state net operating loss carry forward 185,472 337,890
Deferred tax asset 2,788,920 2,392,167
Valuation allowance (foreign) (2,515,954) (1,926,341)
Valuation allowance (federal) (90,220) (266,711)
Total deferred tax asset 182,746 199,115
Deferred tax liability:    
Property, plant, and equipment (181,224) (197,593)
Other (1,522) (1,522)
Total deferred tax liability (182,746) (199,115)
Net Deferred Tax Asset $ 0 $ 0