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Fluid and mineral inclusions in corundum from gem gravels in Sri Lanka

Published online by Cambridge University Press:  05 July 2018

A. A. de Maesschalck  and
I. S. Oen
A. A. de Maesschalck
Affiliation:
Institute of Earth Sciences, Free University, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
I. S. Oen
Affiliation:
Institute of Earth Sciences, Free University, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
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Abstract

Mineral and fluid inclusions were studied in seven gem corundums from gravels of three areas in Sri Lanka. All fluid inclusions are pure CO2. Microthermometry results on primary fluid inclusions suggest formation of corundum under granulite facies metamorphism (>630°C, 5.5 kbar). Secondary fluid inclusions indicate different retrograde events of post-metamorphic cooling and uplift for different source areas.

Keywords

corundumfluid inclusionsgem gravelsSri Lanka
Type
Non-silicate Mineralogy
Information
Mineralogical Magazine , Volume 53 , Issue 373 , December 1989 , pp. 539 - 545
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1989

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