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17. Business Segments (Details 1) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Total Assets | $ 16,545,031 us-gaap_Assets | $ 14,890,991 us-gaap_Assets
United States Antimony [Member] |  |
Total Assets | 3,045,426 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember | 3,017,768 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Mexico Antimony [Member] |  |
Total Assets | 11,415,198 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember | 9,668,998 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Subtotal Antimony [Member] |  |
Total Assets | 14,460,624 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember | 12,686,766 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember
Zeloite (Member) |  |
Total Assets | $ 2,084,407 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember | $ 2,204,225 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember

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