Mantle wedge involvement in the petrogenesis of Archaean grey gneisses in West Greenland

Carbonatitic carbonates have high Sr and Ba, and carbonatitic apatite has high P2O5 and very steep REE spectra. Adding such a component to a peridotite-derived magma produces geochemical features similar to those of sanukitoids, except that high phosphorus is not described as typical of sanukitoids. We observe that the enriched diorites from Greenland are sanukitoid-like, although they are not sanukitoids by the original definition, and their genesis requires a twist to the current models for sanukitoid petrogenesis.