14. Business Segments (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Capital expenditure	$ 103,895	$ 161,010	$ 200,166	$ 473,578
United States Antimony
Capital expenditure	9,327	1,368	32,448	2,713
Mexico Antimony
Capital expenditure	3,897	141,797	30,662	416,703
Subtotal Antimony
Capital expenditure	13,224	143,165	63,110	419,416
Precious Metals
Capital expenditure	82,324	6,398	120,845	13,152
Zeolite
Capital expenditure	$ 8,347	$ 11,447	$ 16,211	$ 41,010