14. Business Segments (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Properties, plants and equipment, net	$ 15,949,236	$ 16,030,333
Total Assets	18,234,739	18,260,201
United States Antimony [Member]
Properties, plants and equipment, net	1,753,001	1,766,328
Total Assets	2,740,833	2,505,189
Mexico Antimony [Member]
Properties, plants and equipment, net	12,297,268	12,539,805
Total Assets	13,077,444	13,367,960
Subtotal Antimony [Member]
Properties, plants and equipment, net	14,050,269	14,306,133
Total Assets	15,818,277	15,873,149
Precious Metals [Member]
Properties, plants and equipment, net	390,650	171,074
Total Assets	390,650	171,074
Zeolite [Member]
Properties, plants and equipment, net	1,508,317	1,553,126
Total Assets	$ 2,025,812	$ 2,215,978