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Pressure-induced cation exchange in bentonite/laponite mixtures

Published online by Cambridge University Press:  09 July 2018

E. Paterson  and
D. R. Clark
E. Paterson
Affiliation:
Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB9 2QJ, UK
D. R. Clark
Affiliation:
Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB9 2QJ, UK
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Abstract

Exchangeable cation associations in physical mixtures of bentonite and laponite have been examined using X-ray diffraction and a combination of electron microprobe analysis and multivariate statistical methods. The results suggest that cation exchange can occur in air-dry mixtures when pressure (∼64 kbar) is applied. Although no attempt is made to describe the mechanism of the reaction it appears to require the presence of adsorbed water.

Type
Research Article
Information
Clay Minerals , Volume 26 , Issue 3 , September 1991 , pp. 371 - 375
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1991

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References

Clark, D.R., Bracewell, J.M. & Paterson, E. (1985) Inter-element relationships from microprobe analysis using multivariate statistical methods. Micron Microsc. Acta., 16, 151–157 CrossRefGoogle Scholar
Hall, P.L. & Astill, D.M. (1989) Adsorption of water by homoionic forms of Wyoming montmorillonite (SWy-1). Clays Clay Miner., 37, 355–363.Google Scholar
Howarth, R.J., & Sinding-Larsen, R. (1983) Multi-variate analysis. Pp 206-289 in: Handbook of Exploration Geochemistry Vol. 2 Statistics and Data Analysis in Geochemical Prospecting(Howarth, R. J., editor) Elsevier, Amsterdam.Google Scholar
Van Olphen, H. & Fripiat, J.J. (1979) Data Handbook for Clay Materials and other Non-metallic Minerals. Pergamon Press, Oxford.Google Scholar