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Zeolites of the elinoptilolite–heulandite type in sediments of south-east England

Published online by Cambridge University Press:  05 July 2018

G. Brown
Affiliation:
Pedology Department, Rothamsted Experimental Station, Harpenden, Herts
J. A. Catt
Affiliation:
Pedology Department, Rothamsted Experimental Station, Harpenden, Herts
A. H. Weir
Affiliation:
Pedology Department, Rothamsted Experimental Station, Harpenden, Herts

Summary

Clinoptilolite-heulandite is reported from Jurassic, Cretaceous, and Palaeocene sediments in south-east England. It occurs mainly in 1–20 μm size fractions, and is associated with abundant montmorillonite and often also with glauconite and amorphous silica or low-temperature disordered cristobalite-tridymite. Its mode of occurrence and the associated minerals suggest an authigenic origin, but there is no evidence that the source material was volcanic.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1969

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