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Subsilicic magnesian potassium-hastingsite from the Prince Olav Coast, East Antarctica

Published online by Cambridge University Press:  05 July 2018

Kazuyuki Shiraishi ,
Takanobu Oba ,
Morihisa Suzuki  and
Ken’ichi Ishikawa
Kazuyuki Shiraishi
Affiliation:
National Institute of Polar Research, Kaga, Itabashi-ku, Tokyo 173, Japan
Takanobu Oba
Affiliation:
Department of Geosciences, Joetsu University of Education, Joetsu 943, Japan
Morihisa Suzuki
Affiliation:
Department of Geology, Faculty of School Education, Hiroshima University, Hiroshima 734, Japan
Ken’ichi Ishikawa
Affiliation:
Department of Earth Sciences, College of General Education, Tohoku University, Kawauchi, Sendai 980, Japan
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Abstract

Two subsilicic magnesian potassium-hastingsites (4.55 and 4.34 wt.% K2O) and one magnesian potassium-hastingsite occur in calc-silicate pods in well-layered gneisses from the transitional amphibolite- and granulite-facies terrain of a Cambrian metamorphic complex, East Antarctica. Subsilicic magnesian potassium-hastingsite is the most K-rich Ca-amphibole yet reported:

Keywords

subsilicic magnesian potassium-hastingsiteamphiboleEast Antarctica
Type
Mineralogy
Information
Mineralogical Magazine , Volume 58 , Issue 393 , December 1994 , pp. 621 - 627
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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