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14. Business Segments (Details 2) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Total revenues $ 1,585,191 $ 2,272,283 $ 3,328,182 $ 4,728,648
Depreciation and amortization 223,367 223,273 449,648 446,546
Income (loss) from operations (276,476) (460,418) (579,422) (1,144,185)
Other income (expense) 2,193 (25,621) (3,743) (49,314)
NET INCOME (LOSS) (274,283) (486,039) (583,165) (1,193,499)
United States Antimony        
Total revenues 910,484 1,194,535 2,031,909 2,739,819
Depreciation and amortization 7,394 10,878 14,789 21,755
Income (loss) from operations 126,208 (56,245) 365,559 (108,341)
Other income (expense) 4,739 (4,420) 1,824 (5,787)
NET INCOME (LOSS) 130,947 (60,665) 367,383 (114,128)
Mexico Antimony        
Total revenues 0 313,053 0 473,592
Depreciation and amortization 146,101 149,083 292,199 298,168
Income (loss) from operations (559,575) (629,422) (1,278,641) (1,432,098)
Other income (expense) 0 (18,051) 0 (36,338)
NET INCOME (LOSS) (559,575) (647,473) (1,278,641) (1,468,436)
Subtotal Antimony        
Total revenues 910,484 1,507,588 2,031,909 3,213,411
Depreciation and amortization 153,495 159,961 306,988 319,923
Income (loss) from operations (433,367) (685,667) (913,082) (1,540,439)
Other income (expense) 4,739 (22,471) 1,824 (42,125)
NET INCOME (LOSS) (428,628) (708,138) (911,258) (1,582,564)
Precious Metals        
Total revenues 61,992 60,523 124,198 85,050
Depreciation and amortization 20,683 17,011 44,281 34,021
Income (loss) from operations 41,308 43,513 79,917 51,029
Other income (expense) 0 0 0 0
NET INCOME (LOSS) 41,308 43,513 79,917 51,029
Zeolite        
Total revenues 612,715 704,172 1,172,075 1,430,187
Depreciation and amortization 49,189 46,301 98,379 92,602
Income (loss) from operations 115,583 181,736 253,743 345,225
Other income (expense) (2,546) (3,150) (5,567) (7,189)
NET INCOME (LOSS) $ 113,037 $ 178,586 $ 248,176 $ 338,036