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3. Inventories (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Inventories $ 1,897,618 $ 2,186,823
Antimony Metal [Member]
   
Inventories 257,286 152,821
Antimony Oxide [Member]
   
Inventories 261,431 295,613
Antimony Concentrates
   
Inventories 54,379 46,008
Antimony Ore [Member]
   
Inventories 309,790 500,192
Antimony [Member]
   
Inventories 882,886 994,634
Zeolite [Member]
   
Inventories $ 131,846 $ 197,555