Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2014 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : R7-05
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R7: Petorology, mineralogy and economic geology (Joint session with SRG)
Material transfer in the kelyphitization of garnet: A centrifugal segregation in a chemically closed system
*Masaaki Obata
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
I report a case that material segregation had occurred in a chemically closed system for a kelyphite after garnet from a garnet pyroxenite, Ronda peridotite, Spain. The kelyphite consists of Opx, Sp, Pl and Cpx. Opx-Sp symplectite patches in the kelyphite increases in both size and amount towards the outer side of the kelyphite away from the relict garnet. It was found out that, although the bulk composition of kelyphite differs between the inner and outer sides, overall bulk composition nearly coincides with the precurser garnet except sodium.
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© 2014 Japan Association of Mineralogical Sciences
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