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Subsequent Event - Subsequent Event Exploration Commitment (Details) (USD $)
 1 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]  
Hochschild Pachuca Exploration Commitment 18 month from signing a definitive agreement $ 2,000,000
Hochschild Pachuca Exploration Commitment 36 months from signing a definitive agreement 3,000,000
Hochschild Pachuca Exploration Commitment 60 months from signing a definitive agreement 5,000,000
Total $ 10,000,000