Immiscible metallic melts in the deep Earth: clues from moissanite (SiC) in volcanic rocks

Abstract The occurrence of moissanite (SiC), as xenocrysts in mantle-derived basaltic and kimberlitic rocks sheds light on the interplay between carbon, hydrogen and oxygen in the lithospheric and sublithospheric mantle. SiC is stable only at ƒO2