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The geomicrobiology of supergene metal deposits

Carla M. Zammit, Jeremiah P. Shuster, Emma J. Gagen and Gordon Southam
The geomicrobiology of supergene metal deposits (in Supergene metal deposits, Martin Reich (editor) and Paulo M. Vasconcelos (editor))
Elements (October 2015) 11 (5): 337-342

Abstract

Microbe-catalyzed redistribution of metals in the Earth's crust can produce remarkable, and often economic, metal enrichments. These catalytic processes rely on redox transformations to produce secondary-mineral assemblages. Classic supergene systems relate to copper, where weathering is driven by microbial activity. Roll-front uranium deposits represent a similar, albeit lateral, evolution from aerobic weathering to anaerobic enrichment. Gold is generally resistant to oxidation but a remarkable biogeochemical cycle can produce secondary gold. Finally, banded iron formations, which are microbially catalysed sedimentary deposits, can be further weathered to form high-grade ore. Metals are as important to enzyme catalysts as these catalysts are to metal enrichment.


ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 11
Serial Issue: 5
Title: The geomicrobiology of supergene metal deposits
Title: Supergene metal deposits
Author(s): Zammit, Carla M.Shuster, Jeremiah P.Gagen, Emma J.Southam, Gordon
Author(s): Reich, Martineditor
Author(s): Vasconcelos, Paulo M.editor
Affiliation: University of Queensland, School of Earth Sciences, St. Lucia, Queensl., Australia
Affiliation: Universidad de Chile, Department of Geology, Santiago, Chile
Pages: 337-342
Published: 201510
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 30
Accession Number: 2016-003646
Categories: Economic geology, geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: University of Queensland, AUS, Australia
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201602
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