13. Business Segments (Details 1) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Properties, plants and equipment, net	$ 15,417,160	$ 15,695,966
Total Assets	17,533,395	17,765,998
United States Antimony [Member]
Properties, plants and equipment, net	1,656,131	1,694,331
Total Assets	2,419,320	2,495,842
Mexico Antimony [Member]
Properties, plants and equipment, net	11,768,133	11,984,467
Total Assets	12,500,099	12,681,109
Subtotal Antimony [Member]
Properties, plants and equipment, net	13,424,264	13,678,798
Total Assets	14,919,419	15,176,951
Precious Metals [Member]
Properties, plants and equipment, net	604,197	544,615
Total Assets	604,197	544,615
Zeolite [Member]
Properties, plants and equipment, net	1,388,699	1,472,553
Total Assets	$ 2,009,779	$ 2,044,432