Biomineralization of gold: Biofilms on bacterioform gold

Frank Reith, Stephen L. Rogers, D. C. McPhail, Daryl Webb

Research output: Contribution to journalArticle

Abstract

Bacterial biofilms are associated with secondary gold grains from two sites in Australia. 165 ribosomal DNA clones of the genus Ralstonia that bear 99% similarity to the bacterium Ralstonia metallidurans-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.

Original languageEnglish
Pages (from-to)233-236
Number of pages4
JournalScience
Volume313
Issue number5784
DOIs
Publication statusPublished - 14 Jul 2006
Externally publishedYes

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