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Prepaid Expenses (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Prepaid Expenses [Line Items]
Prepaid mineral leases	$ 2,022,830	$ 1,577,544
Other	785,793	264,935
Total	$ 2,808,623	$ 1,842,479

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Carrying amount as of the balance sheet date of expenditures made, not otherwise specified in the taxonomy, in advance of the timing of recognition of expenses which are expected to be charged against earnings within one year or the normal operating cycle, if longer.

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-Name Accounting Research Bulletin (ARB)

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The total of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount of current assets, as of the balance sheet date, not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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Carrying amount as of the balance sheet date of rental payments made in advance of the rental period; such amounts will be charged against earnings within one year or the normal operating cycle, if longer.

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