14. Business Segments (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Capital expenditure	$ 96,271	$ 312,568
United States Antimony
Capital expenditure	23,121	1,345
Mexico Antimony
Capital expenditure	26,765	274,906
Subtotal Antimony
Capital expenditure	49,886	276,251
Precious Metals
Capital expenditure	38,521	6,754
Zeolite
Capital expenditure	$ 7,864	$ 29,563