Illitization of smectite as seen by high-resolution transmission electron microscopy

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doi: 10.1127/ejm/3/5/0831
Authors:Amouric, Marc; Olives, Juan
Author Affiliations:Primary:
C.R.M.C.2-C.N.R.S., Marseilles, France
Volume Title:European Journal of Mineralogy
Source:European Journal of Mineralogy, 3(5), p.831-835. Publisher: Schweizerbart'sche Verlagsbuchhandlung (Nägele u. Obermiller), Stuttgart, Federal Republic of Germany. ISSN: 0935-1221
Publication Date:1991
Note:In English. 21 refs.
Summary:HRTEM observations on a sample representing an early stage of the transformations of smectite into illite by hydrothermal alteration were able to distinguish pure smectite (with uncollapsed layers 1.25 nm thick), pure illite and interstratified illite-smectite. Two transformations are suggested: 1) dissolution of smectite and crystallization of illite, and 2) solid-state transformation of one smectite layer into one illite layer. Interstratified illite- smectite minerals are of random type and probably formed by a solid state mechanism. Pure illite crystals, generally of 1M polytype, are mainly produced by dissolution-crystallization. [R.A.H.]
Subjects:Clay minerals; Electron microscopy data; Illite; Sheet silicates; Silicates; Smectite; TEM data; Transformations
Abstract Numbers:92M/1343
Record ID:1995056215
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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