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Appl Environ Microbiol. 2001 Jul;67(7):3275-9.

Reductive precipitation of gold by dissimilatory Fe(III)-reducing bacteria and archaea.

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  • 1Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003, USA.


Studies with a diversity of hyperthermophilic and mesophilic dissimilatory Fe(III)-reducing Bacteria and Archaea demonstrated that some of these organisms are capable of precipitating gold by reducing Au(III) to Au(0) with hydrogen as the electron donor. These studies suggest that models for the formation of gold deposits in both hydrothermal and cooler environments should consider the possibility that dissimilatory metal-reducing microorganisms can reductively precipitate gold from solution.

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