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13. Business Segments (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Capital expenditures	$ 23,298	$ 96,271
United States Antimony
Capital expenditures	0	23,121
Mexico Antimony
Capital expenditures	4,872	26,765
Subtotal Antimony
Capital expenditures	4,872	49,886
Precious Metals
Capital expenditures	18,426	38,521
Zeolite
Capital expenditures	$ 0	$ 7,864

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