Interstratified clay minerals and weathering processes

Saved in:
Authors:Wilson, M. J.; Nadeau, P. H.
Author Affiliations:Primary:
Macaulay Inst. Soil Res., Dep. Miner. Soils, Aberdeen, United Kingdom
Volume Title:chemistry of weathering
Volume Authors:Drever, James Irving, editor
Source:NATO Advanced Study Institutes Series. Series C: Mathematical and Physical Sciences, Vol.149, p.97-118; Proceedings of the NATO Advanced Research Workshop on Chemical weathering, Rodez, France, July 2-6, 1984, edited by James Irving Drever. Publisher: D. Reidel Publishing Company, Dordrecht-Boston, International. ISSN: 0377-2071. ISBN: 90-277-1962-4
Publication Date:1985
Note:In English. 66 refs.; illus. incl. 1 table
Summary:The major types of interstratified clay minerals are reviewed, with particular emphasis on those that are characteristic of a weathering environment. It is concluded that these minerals form mainly by transformation reactions involving relatively large crystals of mica or chlorite. However, those interstratified clay minerals that are generally associated with diagenesis - which include regularly interstratified, partially ordered and randomly interstratified illite-smectite - consist of extremely fine particles, typically tens of A thick. For these clays, interstratification may be more apparent than real, as it can be accounted for by an interparticle diffraction effect, whereby interfaces between particles adsorb ethylene glycol and are perceived by XRD as a smectite component. This concept is supported by evidence from XRD and TEM. It is concluded that regularly or partially ordered interstratified clays can be regarded as a single phase for thermodynamic purposes, but that randomly interstratified clays must be generally treated as mixtures of two or more phases. (Authors' abstract) [C.N.]
Subjects:Chemical weathering; Clay mineralogy; Clay minerals; Experimental studies; Illite; Minerals; Sheet silicates; Silicates; Smectite; Weathering; Interstratified minerals
Abstract Numbers:86M/0132
Record ID:1986041582
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first