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17. Business Segments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Capital Expenditure	$ 1,901,490UAMY_CapitalExpenditure	$ 3,575,408UAMY_CapitalExpenditure	$ 3,934,961UAMY_CapitalExpenditure
United States Antimony [Member]
Capital Expenditure	70,076UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	100,158UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember	288,364UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_UnitedStatesAntimonyMember
Mexico Antimony [Member]
Capital Expenditure	1,706,647UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	3,299,027UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember	3,318,552UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_MexicoAntimonyMember
Subtotal Antimony [Member]
Capital Expenditure	1,776,723UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember	3,399,185UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember	3,606,916UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_SubtotalAntimonyMember
Zeloite (Member)
Capital Expenditure	$ 124,767UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	$ 176,233UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember	$ 328,045UAMY_CapitalExpenditure / us-gaap_StatementBusinessSegmentsAxis = UAMY_ZeoliteMember

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