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Gmelinite and herschelite from the Ilímaussaq intrusion in South Greenland

Published online by Cambridge University Press:  05 July 2018

S. Karup-Møller
S. Karup-Møller*
Affiliation:
Institut for Petrologi, Øster Voldgade 5-7, DK-1350, København K, Danmark
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Summary

Hypogene alteration of ussingite from the southern part of the Ilimaussaq intrusion in South Greenland has resulted in the formation of three associations: gmelinite-apophyllite, gmeliniteherschelite- earthy-natrolite, and earthy natrolite alone. Ossingite reacted with late magmatic fluids, producing the secondary minerals either by in situ replacement of the ussingite or in cavities, which may be up to 3 cm across.

Type
Research Article
Information
Mineralogical Magazine , Volume 40 , Issue 316 , December 1976 , pp. 867 - 873
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1976

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