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14. Business Segments (Details 2) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Total revenues $ 1,007,231 $ 1,787,934 $ 4,335,413 $ 6,516,582
Depreciation and amortization 217,650 286,156 667,298 732,702
Income (loss) from operations (988,101) (541,461) (1,567,523) (1,685,646)
Other income (expense) (5,139) (27,131) (8,882) (76,445)
Net income (loss) (993,240) (568,592) (1,576,405) (1,762,091)
United States Antimony        
Total revenues 477,273 1,080,871 2,509,183 3,820,689
Depreciation and amortization 7,395 10,935 22,184 32,690
Income (loss) from operations (208,676) 227,712 156,884 1,083,360
Other income (expense) (2,883) (4,602) (1,058) (10,388)
Net income (loss) (211,559) 223,110 155,826 1,072,972
Mexico Antimony        
Total revenues 0 0 0 473,592
Depreciation and amortization 146,099 210,766 438,297 508,934
Income (loss) from operations (904,337) (921,965) (2,182,979) (3,318,053)
Other income (expense) (4) (18,037) (4) (54,375)
Net income (loss) (904,341) (940,002) (2,182,983) (3,372,428)
Subtotal Antimony        
Total revenues 477,273 1,080,871 2,509,183 4,294,281
Depreciation and amortization 153,494 221,701 460,481 541,624
Income (loss) from operations (1,113,013) (694,253) (2,026,095) (2,234,693)
Other income (expense) (2,887) (22,639) (1,062) (64,763)
Net income (loss) (1,115,900) (716,892) (2,027,157) (2,299,456)
Precious Metals        
Total revenues 48,832 55,500 173,029 140,550
Depreciation and amortization 22,141 17,630 66,422 51,652
Income (loss) from operations 26,691 37,869 106,607 88,898
Other income (expense) 0 0 0 0
Net income (loss) 26,691 37,869 106,607 88,898
Zeolite        
Total revenues 481,126 651,563 1,653,201 2,081,751
Depreciation and amortization 42,015 46,825 140,395 139,426
Income (loss) from operations 98,221 114,923 351,965 460,149
Other income (expense) (2,252) (4,492) (7,820) (11,682)
Net income (loss) $ 95,969 $ 110,431 $ 344,145 $ 448,467