Can kyanite-quartz veins be found in greenschist facies rocks? Any references to this?
Dear Raghav,
Kyanite forms by breakdown of pyrophyllite towards the end of the greenshist facies. Therefore, kyanite veins can be found in greenshist facies rocks.
Petrogenesis of Metamorphic Rocks 8th ed. 2011 Edition
by Kurt Bucher (Author), Rodney Grapes
ISBN-13: 978-3540741688
ISBN-10: 3540741682
It is better to use Petrogenesis of Metamorphic Rocks 1967 edition
by Helmut G.F. Winkler and Niranjan D. Chatterjee
where the facies approach is better explained.
LRK
Please directly compare (attached) the pressure/temperature conditions for kyanite and greenschist in the Pressure [kbar] – Temperature [°C] – diagram showing the stability field of greenschist facies metamorphic conditions (green) combined with the stability fields of Andalusite (A), Sillimanite (S) and Kyanite (D = Disthen). Picture taken from the book of W. Maresch, H.-P. Schertl and O. Medenbach (2016): Gesteine, Systematik, Bestimmung, Entstehung. 3rd Edition, Schweizerbart Stuttgart. Page 272.
Best regards,
Guenter Grundmann
Thank you L. R. K. Perera , Guenter Grundmann , Jorge Costa-de-Moura
for your valuable answers. They were informative. I will further research on this.R/R
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