3. Inventories (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Inventories	$ 905,702	$ 1,094,238
Antimony Oxide - Finished
Inventories	235,514	332,068
Antimony Metal [Member]
Inventories	182,839	102,207
Antimony Concentrates
Inventories	169,721	133,954
Antimony Ore [Member]
Inventories	160,792	319,631
Antimony [Member]
Inventories	748,866	887,860
Zeolite [Member]
Inventories	$ 156,836	$ 206,378