Hydration of cordierite and hypersthene and a description of the retrograde orthoamphibole isograd in the Limpopo belt, South Africa.

D. D. Van Reenen

Hydration of cordierite and hypersthene and a description of the retrograde orthoamphibole isograd in the Limpopo belt, South Africa.

D. D. Van Reenen

Geology

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

The retrograde orthoamphibole isograd in the southern marginal zone of the Limpopo belt is expressed in Mg-rich pelitic gneisses by two hydration reactions that are superimposed on earlier corona textures of cordierite and hypersthene after garnet: hypersthene + quartz + H₂O = anthophyllite, and cordierite + H₂O = gedrite + kyanite + quartz. The T of hydration at the isograd is estimated at <625-650oC with a minimum P of 6 kbar.-J.A.Z.

Original language	English
Pages (from-to)	900-915
Number of pages	16
Journal	American Mineralogist
Volume	71
Issue number	7-8
Publication status	Published - 1986

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

Cite this

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title = "Hydration of cordierite and hypersthene and a description of the retrograde orthoamphibole isograd in the Limpopo belt, South Africa.",

abstract = "The retrograde orthoamphibole isograd in the southern marginal zone of the Limpopo belt is expressed in Mg-rich pelitic gneisses by two hydration reactions that are superimposed on earlier corona textures of cordierite and hypersthene after garnet: hypersthene + quartz + H2O = anthophyllite, and cordierite + H2O = gedrite + kyanite + quartz. The T of hydration at the isograd is estimated at <625-650oC with a minimum P of 6 kbar.-J.A.Z.",

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T1 - Hydration of cordierite and hypersthene and a description of the retrograde orthoamphibole isograd in the Limpopo belt, South Africa.

AU - Van Reenen, D. D.

PY - 1986

Y1 - 1986

N2 - The retrograde orthoamphibole isograd in the southern marginal zone of the Limpopo belt is expressed in Mg-rich pelitic gneisses by two hydration reactions that are superimposed on earlier corona textures of cordierite and hypersthene after garnet: hypersthene + quartz + H2O = anthophyllite, and cordierite + H2O = gedrite + kyanite + quartz. The T of hydration at the isograd is estimated at <625-650oC with a minimum P of 6 kbar.-J.A.Z.

AB - The retrograde orthoamphibole isograd in the southern marginal zone of the Limpopo belt is expressed in Mg-rich pelitic gneisses by two hydration reactions that are superimposed on earlier corona textures of cordierite and hypersthene after garnet: hypersthene + quartz + H2O = anthophyllite, and cordierite + H2O = gedrite + kyanite + quartz. The T of hydration at the isograd is estimated at <625-650oC with a minimum P of 6 kbar.-J.A.Z.

UR - https://www.scopus.com/pages/publications/0022879334

M3 - Article

AN - SCOPUS:0022879334

SN - 0003-004X

VL - 71

SP - 900

EP - 915

JO - American Mineralogist

JF - American Mineralogist

IS - 7-8

ER -

Hydration of cordierite and hypersthene and a description of the retrograde orthoamphibole isograd in the Limpopo belt, South Africa.

Abstract

ASJC Scopus subject areas

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