Genthelvite and willemite, zinc minerals associated with alkaline magmatism from the

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 (Zn4Be3Si3012S), identified in samples by strong green catho...

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Bibliographic Details
Main Authors: Motzfeldt Centre, South Greenl, Adrian A. Finch
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
willemite
genthelvite
metasomatism
Igaliko
Greenland
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.603.7654
http://www.minersoc.org/pages/Archive-MM/Volume_54/54-376-407.pdf
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Summary: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 (Zn4Be3Si3012S), 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).

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