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Electron-probe microanalysis of coronas in a troctolite from Sulitjelma, Norway

Published online by Cambridge University Press:  14 March 2018

Roger Mason
Roger Mason*
Affiliation:
Department of Geology, University College, London W.C. 1
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Summary

The results of the electron-probe microanalysis of the three minerals from orthopyroxene-amphibole-spinel coronas between olivine and plagioclase in a troctolite from Sulitjelma, Norway, are presented. They are shown to be incompatible with a late-magmatic origin for the coronas, but compatible with an origin by diffusion of material in solution in an aqueous medium across the olivine-plagioclase interface. This theory is discussed on a quantitive basis in the light of the microanalytical data.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 36 , Issue 280 , December 1967 , pp. 504 - 514
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1967

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