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5. Inventories (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Inventories $ 1,192,189 $ 1,066,813
Zeolite [Member]
   
Inventories 197,555  
Antimony Metal [Member]
   
Inventories 152,821 152,026
Antimony Oxide [Member]
   
Inventories 295,613 180,404
AntimonyConcentrates [Member]
   
Inventories 46,008   
Antimony Ore [Member]
   
Inventories 500,192 644,113
Antimony [Member]
   
Inventories 994,634 976,543
Zeolite [Member]
   
Inventories   $ 90,270