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Applied and Environmental Microbiology, July 2001, p. 3275-3279, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3275-3279.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Reductive Precipitation of Gold by Dissimilatory Fe(III)-Reducing Bacteria and Archaea

Kazem Kashefi, Jason M. Tor, Kelly P. Nevin, and Derek R. Lovley*

Department of Microbiology, University of Massachusetts, Amherst, Massachusetts 01003

Received 8 January 2001/Accepted 8 April 2001

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.

* Corresponding author. Mailing address: Department of Microbiology, University of Massachusetts, 203 Morrill Science Center IV, Amherst, MA 01003. Phone: (413) 545-9651. Fax: (413) 545-1578. E-mail: dlovley{at}microbio.umass.edu.

Applied and Environmental Microbiology, July 2001, p. 3275-3279, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3275-3279.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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