| Cover - shares | 9 Months Ended | |
| Sep. 30, 2022 | Nov. 14, 2022 | |
| Cover [Abstract] | ||
| Entity Registrant Name | UNITED STATES ANTIMONY CORPORATION | |
| Entity Central Index Key | 0000101538 | |
| Document Type | 10-Q/A | |
| Amendment Flag | true | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Small Business | true | |
| Entity Shell Company | false | |
| Entity Emerging Growth Company | false | |
| Entity Current Reporting Status | Yes | |
| Document Period End Date | Sep. 30, 2022 | |
| Entity Filer Category | Non-accelerated Filer | |
| Document Fiscal Period Focus | Q3 | |
| Document Fiscal Year Focus | 2022 | |
| Entity Common Stock Shares Outstanding | 106,373,341 | |
| Document Quarterly Report | true | |
| Document Transition Report | false | |
| Entity File Number | 001-08675 | |
| Entity Incorporation State Country Code | MT | |
| Entity Tax Identification Number | 81-0305822 | |
| Entity Address Address Line 1 | P.O. Box 643 | |
| Entity Address City Or Town | Thompson Falls | |
| Entity Address State Or Province | MT | |
| Entity Address Postal Zip Code | 59873 | |
| City Area Code | 406 | |
| Amendment Description | We are filing this Amendment No . 1 Form 10Q-A (“Amendment”) to amend our Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2022, as filed with the Securities and Exchange Commission (“SEC” ) on November 14, 2022 (“Form 10-Q). The sole purpose of this amendment is to reflect final clerical changes to the document in the Form 10-Q. Certain tables that did not present properly in the Form 10-Q have been corrected. The following final changes have been included in this amendment: Part II, Item 7Management’s Discussion and Analysis of Financial Conditions and Results of Operations (Antinomy tables only) | |
| Local Phone Number | 827-3523 | |
| Security 12b Title | Common Stock, $0.001 par value | |
| Trading Symbol | UAMY | |
| Security Exchange Name | NYSE | |
| Entity Interactive Data Current | Yes |
