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A note on an analcite-bearing lamproite from Devonshire

Published online by Cambridge University Press:  01 May 2009

Danielle Velde
Danielle Velde
Affiliation:
Laboratoire de Pétrographie, Université de Paris VI, 9, quai Saint Bernard, 75-Paris, France
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Summary

The olivine minette described by Tidmarsh from the Holmead Farm, Lox-beare, contains analcite microphenocrysts in addition to olivine, biotite, clinopyroxene and alkali-feldspar. A new chemical analysis shows that the rock is undersaturated with respect to silica. This is still another example of analcite occurring in a potash-rich rock.

Information

Type
Articles
Information
Geological Magazine , Volume 108 , Issue 3 , May 1971, pp. 201 - 204
Copyright
Copyright © Cambridge University Press 1971

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References

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