(1) How can I determine a magmatic epidote from a metamorphic epidote (based on major element composition)? (Are there any diagrams?)
(2) What about the P - T of the magmatic epidote? Are there any thermobarometers?
Gabriele Giuli
about the P-T condition for the co-existence of epidote and silicate melt see:
-Max W. Schmidt and Stefano Poli (2004) Magmatic Epidote, Reviews in Mineralogy and Geochemistry 56 , pp. 399-430
and
- Schmitd and Thompson (1996) Epidote in calc-alkaline magmas: An experimental study of stability, phase relationships, and the role of epidote in magmatic evolution, American Mineralogist, 81, 462-474.
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