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3. Inventories (Tables)
9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Inventories

   

September 30,

2016

   

December 31,

2015

 
Antimony Metal   $ 60,491     $ 102,207  
Antimony Oxide     253,110       332,068  
Antimony Concentrates     48,785       133,954  
Antimony Ore     151,841       319,631  
     Total antimony     514,227       887,860  
Zeolite     223,891       206,378  
    $ 738,118     $ 1,094,238