Id. Ryabchikov et al., PARTITIONING OF RARE-EARTH ELEMENTS BETWEEN PHOSPHATE-RICH CARBONATITE MELTS AND MANTLE PERIDOTITES, Mineralogy and petrology, 49(1-2), 1993, pp. 1-12
Near solidus equilibria in the system mantle peridotite-carbonate-phos
phate doped with Ce and Yb have been studied at 20 kbar and 950-degree
s-C. Carbonatitic melts in this system may be quenched into homogeneou
s glasses. Such melts intensely extract REE from rock-forming mantle m
inerals, and their migration may cause processes of mantle metasomatis
m.