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Structural Transformations of Interstratified Illite-Smectites from Dolná Ves Hydrothermal Deposits: Dynamics and Mechanisms

Published online by Cambridge University Press:  28 February 2024

V. A. Drits ,
A. L. Salyn  and
V. Šucha
V. A. Drits
Affiliation:
Geological Institute, Academy of Sciences, Moscow, Russia
A. L. Salyn
Affiliation:
Geological Institute, Academy of Sciences, Moscow, Russia
V. Šucha
Affiliation:
Geological Institute, Academy of Sciences, Moscow, Russia Comenius University, Bratislava, Slovakia
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Abstract

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Structural transformations of illite-smectite samples of hydrothermal genesis with increasing contents of illite layers were studied by X-ray powder diffraction. The samples were K-saturated and subjected to wetting and drying cycles to increase three-dimensional structural ordering. Diffraction profiles were analyzed with the help of a specially devised computer program based on the approximation of individual diffraction reflections by “bell-shaped” functions, with minimization of the differences between experimental and simulated profiles. The data indicate that the transformations of these illite-smectite samples were accompanied not only by variations in the proportion of illite and smectite layers and in the pattern of their alternation, but also by a change in structure within 2:1 layers.

Keywords

Cis-octahedronIllite-smectiteIllitizationPhase TransformationsTrans-octahedron
Type
Research Article
Information
Clays and Clay Minerals , Volume 44 , Issue 2 , April 1996 , pp. 181 - 190
Copyright
Copyright © 1996, The Clay Minerals Society

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