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Genthelvite and willemite, zinc minerals associated with alkaline magmatism from the Motzfeldt centre, South Greenland

Published online by Cambridge University Press:  05 July 2018

Adrian A. Finch
Adrian A. Finch*
Affiliation:
Grant Institute of Geology, West Mains Road, Edinburgh EH9 3JW, UK
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Abstract

Two new occurrences of Zn-rich minerals are described from the SM6 lujavrite unit of the Motzfeldt alkaline centre, South Greenland. Zinc and beryllium complexes in the magma gave rise to the formation of interstitial grains of genthelvite (Zn4Be3Si3O12S), identified in samples by strong green cathodoluminescence. It is suggested that subsequent metasomatism leached Be from the genthelvite, giving rise to the formation of associated willemite (Zn2SiO4).

Keywords

willemitegenthelvitemetasomatismIgalikoGreenland
Type
Silicate Mineralogy
Information
Mineralogical Magazine , Volume 54 , Issue 376 , September 1990 , pp. 407 - 412
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1990

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