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A study of some glauconites from cretaceous and tertiary formations in South-East England

Published online by Cambridge University Press:  09 July 2018

S. G. McRae  and
J. L. M. Lambert
S. G. McRae
Affiliation:
Wye College (University of London), Near Ashford, Kent
J. L. M. Lambert
Affiliation:
Wye College (University of London), Near Ashford, Kent
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Abstract

A study of soil formation on glauconitic parent materials in South-East England has included a mineralogical investigation of glauconite grains, heretofore identified solely by morphology. The grains have been subjected to X-ray diffraction, differential thermal and partial chemical analyses, and have been found to consist essentially of randomly interstratified micaceous and montmorillonitic clay mineral; thus all are glauconite sensu lato. Only small amounts of non-clay mineral impurities have been detected. The proportion of expandable layer material has been found to be related to the % K2O and cation exchange capacity of the specimens.

Type
Research Article
Information
Clay Minerals , Volume 7 , Issue 4 , December 1968 , pp. 431 - 440
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1968

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