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Clay mineralogy and plasticity of the Fuller's Earth Formation Bath, UK

Published online by Cambridge University Press:  09 July 2018

A. B. Hawkins ,
M. S. Lawrence  and
K. D. Privett
A. B. Hawkins
Affiliation:
Department of Geology, University of Bristol, Bristol BS8 1RJ
M. S. Lawrence
Affiliation:
Johnson Poole & Bloomer, Templeton Business Centre, Templeton Street, Glasgow G40 1DW
K. D. Privett
Affiliation:
Sir Robert McAlpine & Sons Ltd., Rigby Lane, Hayes, Middx UB3 1EU
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Abstract

Clay from the Fuller's Earth formation is shown to contain mainly illite, kaolinite and calcite, in contrast to the Fuller's Earth Bed in which montmorillonite is the main clay mineral. A negative correlation has been demonstrated between the calcite content and the plasticity as measured by the Atterberg limits. Fresh samples from the Fuller's Earth Bed have a higher plasticity than those of the fuller's earth clay with similar calcite percentages, due to the relative increases in the expanding lattice clay mineral. Weathering of the fuller's earth clay typically reduces the calcite content and increases the percentage of montmorillonite, resulting in a higher plasticity.

Type
Research Article
Information
Clay Minerals , Volume 21 , Issue 3 , September 1986 , pp. 293 - 310
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1986

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