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Clay Science 12 (suppl. 1) (2005) 1-5

Crystal structure of mixed-layer minerals and their X-ray identification: New insights from X-ray diffraction profile modeling.

Bruno Lanson 1

(2005)

Modeling of experimental X-ray diffraction (XRD) patterns represents the optimum approach to the structure determination of mixed-layer structures (MLSs) that are commonly found in natural clay-rich samples. This approach allows for a detailed structural characterization of both pure and mixed-layer clay phases and for a semi-quantitative phase analysis in complex mixtures. The two informations are essential to gain new insight into the actual nature of reactions taking place in geological environments. Significant new findings obtained at different scales (from that of the particle to that of the elementary layer) on the actual structure of MLSs by modeling XRD profiles are reported.

1 :	Laboratoire de géophysique interne et tectonophysique (LGIT)
	CNRS : UMR5559 – IRD – LCPC – OSUG – INSU – Université de Savoie – Université Joseph Fourier - Grenoble I

Domaine

:

Planète et Univers/Sciences de la Terre/Pétrographie

Mots Clés : X-ray diffraction – layered minerals – mixed-layering – interstratification – simulation – crystal structure – crystal chemistry – expandable layers – order-disorder

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Contributeur : Pascale Talour <>

Soumis le : Mardi 17 Octobre 2006, 09:33:06

Dernière modification le : Mardi 17 Octobre 2006, 09:35:39