Extended Data Fig. 6: The XANES spectra of iron oxides.
From: Hadean mantle oxidation inferred from melting of peridotite under lower-mantle conditions
a synthesized fayalite (Fe2SiO4) (Fe3+/ΣFe ratio = −0.013). b synthesized hematite (Fe2O3) (Fe3+/ΣFe ratio = 0.997).
