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Income Taxes (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current:              
Federal                 
Deferred:              
Federal            (76,081)   
Income taxes provision       (76,081)       (76,081)   
Reconciliation of Tax Rate:              
Federal statutory rate         (0.34%) (34.00%) (34.00%)
Change in valuation allowance         33.90% 32.90% 33.70%
Other         0.10% 0.40% 0.30%
Effective income tax rate            (0.70%)   
The tax effect of these temporary differences representing deferred tax:              
Asset retirement obligation 401,922       609,905 401,922  
Fixed assets (121,016)       (695,728) (121,016)  
Mine exploration and development costs 5,002,105       5,576,631 5,002,105  
Derivatives - change in fair value (332,754)       (487,274) (332,754)  
Stock-based compensation 682,761       2,261,053 682,761  
Net operating losses 32,122,539       40,925,397 32,122,539  
Transaction costs 1,312,856       1,362,388 1,312,856  
Other 64,942       48,048 64,942  
Valuation allowance (39,133,355)       (49,600,420) (39,133,355)  
Total net deferred tax assets                 
Net operating loss carryforwards         120,370,000    
Beginning year of expiration of net operating loss carryforwards         2023    
Change in valuation allowance         $ 10,467,000 $ 3,897,000 $ 20,302,000