Biomineralization of gold: Biofilms on bacterioform gold
Date
2006
Authors
Reith, F.
Rogers, S.
Mcphail, D.
Webb, D.
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Journal article
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Science, 2006; 313(5784):233-236
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Frank Reith, Stephen L. Rogers, D. C. McPhail, Daryl Webb
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Abstract
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Bacterial biofilms are associated with secondary gold grains from two sites in Australia. 16
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ribosomal DNA clones of the genus
<jats:italic>Ralstonia</jats:italic>
that bear 99% similarity to the bacterium
<jats:italic>Ralstonia metallidurans</jats:italic>
—shown to precipitate gold from aqueous gold(III) tetrachloride—were present on all DNA-positive gold grains but were not detected in the surrounding soils. These results provide evidence for the bacterial contribution to the authigenic formation of secondary bacterioform gold grains and nuggets.
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Copyright © 2006 American Association for the Advancement of Science