17. Business Segments (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Total Assets	$ 17,557,123	$ 17,131,254
United States Antimony [Member]
Total Assets	2,199,694	2,510,323
Mexico Antimony [Member]
Total Assets	12,824,291	12,073,219
Subtotal Antimony [Member]
Total Assets	15,023,985	14,583,542
Precious Metals [Member]
Total Assets	615,719	642,774
Zeolite (Member)
Total Assets	$ 1,917,419	$ 1,904,938