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3. Inventories
 9 Months Ended
Sep. 30, 2015
Inventory Disclosure [Abstract]  
Inventories

Inventories at September 30, 2015 and December 31, 2014, 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. Inventory at September 30, 2015 and December 31, 2014, is as follows:

 

    September 30, 2015     December 31, 2014  
Antimony Metal   $ 145,229     $ 40,352  
Antimony Oxide     181,605       718,982  
Antimony Concentrates     945,551       33,545  
Antimony Ore     732,642       447,262  
     Total antimony     2,005,027       1,240,141  
Zeolite     205,001       193,398  
    $ 2,210,028     $ 1,433,539  

 

During the first quarter of 2015 the Company discovered it had been overcharged for raw material purchases from a vendor.  The Company brought the matter to the vendor’s attention and received a $914,967 credit to accounts payable due the vendor that has been recorded as gain on liability adjustment during the nine months ended September 30, 2015.