Reply to the comment by Vidal, Dubacq, and Lanari on "The role of H3O+ in the crystal structure of illite"
Nieto, Fernando (Universidad de Granada. Departamento de Mineralogía y Petrología)
Mellini, Marcello (Università di Siena. Dipartimento di Scienze della Terra)
Abad, Isabel (Universidad de Jaén. Departamento de Geología)

Date:	2010
Abstract:	The arguments of Vidal et al. (2010) against the incorporation of HO rather than of HO in the interlayer position of illite are disputable. Stoichiometric arguments do indeed suggest that the excess water in the Silver Hill illite is in the formof HO. No reason exists to assume less water content in the IMt-2 sample than in those determined by Hower and Mowatt (1966) and confirmed by the thermogravimetric analyses of Nieto et al. (2010). The comparison between element contents calculated from end-members and those from the structural formula in figure 1 of Vidal et al. (2010) is not an experimental result, but rather a trivial mathematical artifact. The fact that thermodynamic models, based on the incorporation of interlayer HO in illite, may provide reasonable estimates neither proves nor disproves the presence of HO; this is because thermodynamics is a non-atomistic, macroscopic approach.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Composition ; Hydronium ; Illite ; Water
Published in:	Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 721-723, ISSN 1552-8367

DOI: 10.1346/CCMN.2010.0580511

3 p, 90.7 KB  UAB restricted access

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