Table 1 Bulk rock major (wt%) and minor (ppm) element compositions; average phase proportions (%); geothermal and oxygen fugacity estimates of the Mt. Leura (LE) peridotite xenoliths. Average temperature (T) and oxygen fugacity (ΔlogfO₂) for LE harzburgites are calculated at 2 GPa. Estimated temperatures are from the two-pyroxene geothermometer of Brey and Köhler³⁶, and olivine-spinel geothermometers of Ballhaus et al.³⁷ and Jianping et al.³⁸. ΔlogfO₂ (FMQ) is calculated from the method of Wood³⁹ using Brey and Köhler³⁶ temperature and it is reported as difference (Δ) with respect to Fayalite-Magnetite-Quartz (FMQ) buffer⁴⁰. Uncertainties are reported.

From: Phlogopite-pargasite coexistence in an oxygen reduced spinel-peridotite ambient