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11. Business Segments (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Properties, plants and equipment, net $ 10,867,113 $ 10,576,406
Total Assets 14,185,465 14,442,908
United States Antimony [Member]
   
Properties, plants and equipment, net 1,924,347 1,889,859
Total Assets 3,700,537 3,941,460
Mexico Antimony [Member]
   
Properties, plants and equipment, net 7,245,800 6,969,622
Total Assets 8,279,063 8,166,318
Subtotal Antimony [Member]
   
Properties, plants and equipment, net 9,170,147 8,859,481
Total Assets 11,979,600 12,107,778
Zeolite [Member]
   
Properties, plants and equipment, net 1,696,966 1,716,925
Total Assets $ 2,205,865 $ 2,335,130