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Larnitic kirschsteinite from the Kotakonda kimberlite, Andhra Pradesh, India

Published online by Cambridge University Press:  05 July 2018

N. V. Chalapathi Rao ,
S. J. B. Reed ,
D. M. Pyle  and
P. D. Beattie
N. V. Chalapathi Rao
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
S. J. B. Reed
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
D. M. Pyle
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
P. D. Beattie
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
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Extract

Olivines from igneous rocks generally have low calcium contents. However, olivines crystallized from strongly silica-undersaturated magmas occasionally contain large amounts of kirschsteinite (Ki" CaFeSiO4) and monticellite (Mo: CaMgSiO4) components. The purpose of this note is to report the first natural occurrence of kirschsteinite crystals that have lamite (La: CazSiO4) in the mineralogical norm.

Keywords

kirschsteinitekimberliteKotakondaAndhra Pradesh, India
Type
Short Communications
Information
Mineralogical Magazine , Volume 60 , Issue 400 , June 1996 , pp. 513 - 516
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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