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16. Commitments and Contingencies (Details Narrative) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract] |  |
Payments paid for capitalized mineral rights | $ 200,000 UAMY_PaymentsPaidForCapitalizedMineralRights | $ 130,434 UAMY_PaymentsPaidForCapitalizedMineralRights

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- Definition Payments paid for capitalized mineral rights. + References No definition available. + Details
Name: | UAMY_PaymentsPaidForCapitalizedMineralRights
Namespace Prefix: | UAMY_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration