Skip to Main Content
Book Chapter

Mechanisms of sedimentary pyrite formation

By
Martin A.A. Schoonen
Martin A.A. Schoonen
1
Center for Environmental Molecular Science, Department of Geosciences, Stony Brook University, Stony Brook, New York 11794-2100, USA
Search for other works by this author on:
Published:
January 01, 2004

The mechanisms of pyrite formation are reviewed. Advances since 1994 in our understanding of the mechanisms and rate of pyrite formation, the role of bacteria in the formation of pyrite, framboid formation, and incorporation of impurities into pyrite are emphasized. Both field studies as well as laboratory studies designed to better represent natural environments have provided significant new insights. Field studies suggest that hydrogen sulfide can sulfidize amorphous FeS and form pyrite. The reaction rate as determined in the field is orders of magnitude slower than in laboratory experiments, and questions remain about the role of the FeS surface and the electron acceptor involved in the conversion. It is also becoming increasingly clear that sulfate-reducing bacteria play a more important role than simply providing hydrogen sulfide for the reaction. Experiments with in vitro cultures demonstrate the role of cell walls in directing and promoting the precipitation process. Synthesis of nanoscale pyrite, trace element incorporation, and formation of defects in pyrite are new research directions that are examined.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Special Papers

Sulfur Biogeochemistry - Past and Present

Jan P. Amend
Jan P. Amend
Search for other works by this author on:
Katrina J. Edwards
Katrina J. Edwards
Search for other works by this author on:
Timothy W. Lyons
Timothy W. Lyons
Search for other works by this author on:
Geological Society of America
Volume
379
ISBN print:
9780813723792
Publication date:
January 01, 2004

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal