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3. Inventories (Tables)
9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Inventories
    September 30,     December 31,  
    2017     2016  
Antimony Metal   $ -     $ 112,300  
Antimony Oxide     452,871       326,126  
Antimony Concentrates     19,017       30,815  
Antimony Ore     151,841       181,815  
  Total antimony     623,729       651,056  
Zeolite     316,151       204,581  
    $ 939,880     $ 855,637