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An 57Fe Mossbauer effect study on glauconites from different locations in Belgium and Northern France

Published online by Cambridge University Press:  09 July 2018

E. De Grave ,
J. Vandenbruwaene  and
E. Elewaut
E. De Grave
Affiliation:
Laboratorium voor Magnetisme, Rijksuniversiteit Gent, Proeftuinstraat 42, B9000 Gent
J. Vandenbruwaene
Affiliation:
Laboratorium voor Magnetisme, Rijksuniversiteit Gent, Proeftuinstraat 42, B9000 Gent
E. Elewaut
Affiliation:
Departement Geochronologie, Vrije Universiteit Brussel, Pleinlaan 2, B1050 Brussel, Belgium
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Abstract

Sixteen glauconite samples from different locations in Belgium and Northern France were investigated by 57Fe Mössbauer spectroscopy at room temperature. The spectra were fitted with three Fe3+ and two Fe2+ doublets, both Fe species occupying M1(trans) and M2(cis) sites in the T-O-T layers. The third Fe3+ doublet was assigned to interlayer ferric complexes. The observed Mössbauer parameters did not show significant variations from sample to sample. No direct relation between K and Fe content was observed, although within some distinct groups (e.g. Bande Noire, Cenomanian) the amount of Fe2+ increased with increasing K content.

Type
Research Article
Information
Clay Minerals , Volume 20 , Issue 2 , June 1985 , pp. 171 - 179
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1985

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