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Sulfur and iron surface states on fractured pyrite surfaces
H. W. Nesbitt, G. M. Bancroft, A. R. Pratt and M. J. Scaini
Sulfur and iron surface states on fractured pyrite surfaces
American Mineralogist (October 1998) 83 (9-10): 1067-1076
Sulfur and iron surface states on fractured pyrite surfaces
American Mineralogist (October 1998) 83 (9-10): 1067-1076
Index Terms/Descriptors
Abstract
Pyrite, unlike most other minerals with a rocksalt-type structure, typically fractures conchoidally. Both S-S bonds and Fe-S bonds are ruptured when pyrite is fractured (the former being the weaker of the two). With each ruptured, S-S bond, two mononuclear species (formally S (super 1-) ) are produced, one bound to each of the fractured surfaces. This monomer is reduced to S (super 2-) (monosulphide) during relaxation through oxidation of surface Fe (super 2+) ions to Fe (super 3+) according to the reaction Fe (super 2+) (sub surface) + S (super 1-) (sub surface) --> Fe (super 3+) (sub surface) + S (super 2-) (sub surface) .
ISSN: 0003-004X
EISSN: 1945-3027
Coden: AMMIAY
Serial Title: American Mineralogist
Serial Volume: 83
Serial Issue: 9-10
Title: Sulfur and iron surface states on fractured pyrite surfaces
Affiliation: University of Western Ontario, Department of Earth Sciences,
London, ON,
Canada
Pages: 1067-1076
Published: 199810
Text Language: English
Publisher: Mineralogical Society of America,
Washington, DC,
United States
References: 30
Accession Number: 1998-070353
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Update Code: 199824
