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An oxygen buffer for some peraluminous granites and metamorphic rocks.

American Mineralogist

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Abstract

The mineral assemblage biotite-garnet-muscovite-magnetite-quartz and its sub-sets are common in many peraluminous granites, schists and gneisses. If the biotite and garnet are reasonably iron-rich, then the system is a useful buffer for fO2. Available thermochemical data indicate that, in T-fO2 space, the buffer curve is located between the hematite-magnetite curve and the quartz-magnetite-fayalite curve, in a region that previously had no buffer curve applicable to peraluminous rocks. -J.A.Z.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
An oxygen buffer for some peraluminous granites and metamorphic rocks.
Series title:
American Mineralogist
Volume
70
Issue:
1-2
Year Published:
1985
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Mineralogist
First page:
65
Last page:
73