00468nas a2200073   4500008003900000245024300039210006900282856004300351       1989                          d00a*FRENKEL, M.Y. and KHAPAYEV, V.V. 1989. A convective cumulation model of crystallization differentiation of the melt and formation of the apatite deposits in the Khibiny ijolite-urtite intrusion. Geochemistry International, 27(4): 101-12.0 aFRENKEL MY and KHAPAYEV VV 1989 A convective cumulation model of  uhttps://alkcarb.myrocks.info/node/6328