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17. Business Segments (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Capital expenditures	$ 792,925	$ 999,119
United States Antimony
Capital expenditures	8,429	0
Mexico Antimony
Capital expenditures	705,123	803,579
Subtotal Antimony
Capital expenditures	713,552	803,579
Precious Metals
Capital expenditures	21,086	40,988
Zeolite
Capital expenditures	$ 58,287	$ 154,552

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