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Comment on “The Role of H3O+ in the Crystal Structure of Illite” By F. Nieto, M. Melini, And I. Abad

Published online by Cambridge University Press:  01 January 2024

Olivier Vidal ,
Benoît Dubacq  and
Pierre Lanari
Olivier Vidal*
Affiliation:
LGCA, Université Grenoble, CNRS, 1381 rue de la Piscine, BP53, 38041 Grenoble cedex 09, France
Benoît Dubacq
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
Pierre Lanari
Affiliation:
LGCA, Université Grenoble, CNRS, 1381 rue de la Piscine, BP53, 38041 Grenoble cedex 09, France
*
* E-mail address of corresponding author: [email protected]
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Abstract

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The arguments of Nieto et al. (2010) in favor of the incorporation of H3O+ rather than H2O in interlayer positions of illite are disputable. Stoichiometric arguments suggest that the excess water in the Silver Hill illite is in the form of H2O. Moreover, recent thermodynamic models assuming the incorporation of interlayer H2O in illite provide reasonable estimates of temperature and water content using the AEM/TEM analyses of Nieto et al. (2010).

Keywords

CompositionHydroniumIlliteWater
Type
Article
Information
Clays and Clay Minerals , Volume 58 , Issue 5 , October 2010 , pp. 717 - 720
Copyright
Copyright © Clay Minerals Society 2010

References

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