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3. Inventories (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Inventories $ 878,431 $ 1,192,189
Antimony Metal [Member]
   
Inventories    152,821
Antimony Oxide [Member]
   
Inventories 416,135 295,613
Antimony Concentrates
   
Inventories 61,590 46,008
Antimony Ore [Member]
   
Inventories 238,385 500,192
Antimony [Member]
   
Inventories 716,110 994,634
Zeolite [Member]
   
Inventories $ 162,321 $ 197,555