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Tamarugite on the Isle of Wight, UK

Published online by Cambridge University Press:  05 July 2018

R. J. King
R. J. King*
Affiliation:
The Oak, Longdon, Gloucestershire GL20 6AR, UK
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Abstract

Tamarugite (NaAl(SO4)2.6H2O) occurs at Compton Chine (NGR SZ 36808513), on the Isle of Wight, U.K., as globular encrustations covering an area of 2.8 m2 on argillaceous pyritous siltstones of the Lower Greensand Group, Lower Cretaceous. It is proposed that the production of H2SO4 from oxidizing pyrite in the siltstones releases Al ions from the argillaceous sediments, the Na content being acquired from sea spray. An analogy is made between Compton Chine and an occurrence in Victoria, Australia.

Keywords

tamarugiteLower Greensand GroupsulphateIsle of Wight

Information

Type
Research Article
Information
Mineralogical Magazine , Volume 62 , Issue 3 , June 1998 , pp. 371 - 372
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1998

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References

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