Dear all,
the pressure dependent celadonite (reverse Tschermak-) substitution in
white mica (Si content) is often determined to apply the phengite
geobarometer of Massonne&Schreyer (1987, Contrib. Min. Pet. 96, 212-224).
Does somebody recall work performed on/ papers dealing with the influence
of metamorphic fluids on the celadonite-substitution or on the (Fe2+,
Mg)3Al-2 exchange between muscovite and phengite, maybe even on a
quantitative basis. Any leaching effects?
Your comments are, as always, appreciated,
cheers
Dirk
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Dirk Hellwig
Department of Geosciences
Philipps-University Marburg
Hans-Meerwein-Strasse
35032 Marburg/Germany
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phone: +49-6421-2823055
fax: +49-6421-2828919
http://staff-www.uni-marburg.de/~hellwig/
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