An occurrence of villiaumite in the Ilímaussaq Intrusion, South Greenland

Authors

  • Jan Bondam
  • J. Ferguson

Abstract

Villiaumite was found in drill cores from the Ilímaussaq Intrusion, South Greenland.

The villiaumite is found in parageneses which have undergone alteration and in late stage, analcime-rich veins occurring in the per-alkaline rocks, lujavrite and naujaite. Villiaumite is the last formed mineral, crystallizing in a comparatively water-rich environment.

Chemical analysis: F = 44.81, Na= 54.23 , insoluble 0.80.

Spectrographic data: 100 ppm Al; Jess than 100 ppm Si, Ca and Mg ; 50 ppm Mn.

Villiaumite in this occurrence is cubic; a = 4.633 Å. R. I. = 1.325

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Published

1962-09-20

How to Cite

Bondam, J., & Ferguson, J. (1962). An occurrence of villiaumite in the Ilímaussaq Intrusion, South Greenland. Meddelelser Om Grønland, 172(2), 1–13. Retrieved from https://tidsskrift.dk/meddrgroenland/article/view/158679

Issue

Vol. 172 No. 2 (1962): Meddelelser om Grønland

Section

Artikler

License

Coypyright by the authors and the Commision for Scientific Research in Greenland. No parts of the publications may be reproduced in any form without the written permission by the copyright owners.