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3. Inventories (Details) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Inventories $ 2,210,028 $ 1,433,539
Antimony Oxide - Finished    
Inventories 181,605 718,982
Antimony Metal [Member]    
Inventories 145,229 40,352
Antimony Concentrates    
Inventories 945,551 33,545
Antimony Ore [Member]    
Inventories 732,642 447,262
Antimony [Member]    
Inventories 2,005,027 1,240,141
Zeolite [Member]    
Inventories $ 205,001 $ 193,398