Figure 2
From: Phlogopite-pargasite coexistence in an oxygen reduced spinel-peridotite ambient
Plot of Cr#Sp [Cr/(Cr + Al)mol × 100] versus Fo [Mg/(Mg + Fe)mol × 100] contents in olivine, for Mount Leura (LE) peridotite xenoliths. The olivine-spinel mantle array (OSMA) and melting trend are from Arai47. The “metasomatic trend” is generally referred to as the effect of interaction with a migrating fluid/melts.
