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MIneral Property - Mineral Property Exploration Expense (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Notes to Financial Statements |  |  |  |
Geologic and field expenses | $ 28,000 | $ 432,000 | $ 521,000 | $ 1,003,000
Administrative | 48,000 | 81,000 | 253,000 | 274,000
Mt. Hamilton exploration and development |  | (6,000) |  | 308,000
Total exploration costs | $ 76,000 | $ 507,000 | $ 774,000 | $ 1,585,000

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