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3. Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventories

Inventories at September 30, 2013, and December 31, 2012, consisted primarily of finished antimony products, antimony metal, antimony ore, and finished zeolite products that are stated at the lower of first-in, first-out cost or estimated net realizable value. Finished antimony products, antimony metal and finished zeolite products costs include raw materials, direct labor and processing facility overhead costs and freight allocated based on production quantity.  Inventory at September 30, 2013, and December 31, 2012, is as follows:

 

   

September 30,

2013

   

December 31,

2012

 
Antimony Metal   $ 23,207     $ 152,821  
Antimony Oxide     292,235       295,613  
Antimony Concentrate     77,807       46,008  
Antimony Ore     166,801       500,192  
   Total antimony     560,050       994,634  
Zeolite     319,555       197,555  
  Total Inventory   $ 879,605     $ 1,192,189