12. INCOME TAXES (Details 2) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Deferred tax liabilities	$ 0	$ 0
Allowance for obsolete and slow-moving inventories	1,642	1,657
Impairment on property, plant and equipment	474,799	479,151
Exploration costs	1,820,336	1,837,025
Compensation costs of unexercised stock options	1,944,923	2,053,310
US federal net operating loss	9,600,548	9,272,734
Total deferred tax assets	13,842,248	13,643,877
Valuation allowance	(11,545,471)	(11,326,044)
Net deferred tax asset	2,296,777	2,317,833
Current deferred tax asset	1,642	1,657
Long-term deferred tax asset	$ 2,295,135	$ 2,316,176

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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