13. Business Segments (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Capital expenditure	$ 161,010	$ 79,583	$ 473,578	$ 174,388
United States Antimony
Capital expenditure	1,368	0	2,713	0
Mexico Antimony
Capital expenditure	141,797	70,892	416,703	110,977
Subtotal Antimony
Capital expenditure	143,165	70,892	419,416	110,977
Precious Metals
Capital expenditure	6,398	0	13,152	40,988
Zeolite
Capital expenditure	$ 11,447	$ 8,691	$ 41,010	$ 22,423