14. Business Segments (Details 1) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Capital expenditure	$ 20,289	$ 204,260	$ 220,455	$ 677,837
United States Antimony
Capital expenditure	0	0	32,448	2,713
Mexico Antimony
Capital expenditure	2,923	190,861	33,585	607,564
Subtotal Antimony
Capital expenditure	2,923	190,861	66,033	610,277
Precious Metals
Capital expenditure	117,366	4,095	138,211	17,247
Zeolite
Capital expenditure	$ 0	$ 9,304	$ 16,211	$ 50,313