Аннотация:Synthesis of zircono- and titanosilicates in the presence of fluid of different alkalinity was carried out at 600 oC and 2 kbar. Such paragenesis is observed in postmagmatic formations of the Khibiny and Lovozero ultraagpaite complexes. The duration of the experiments was 10 days. The following mineral-like phases were diagnosed in the products of the experiments using electron-probe microanalysis and XRD: eudialyte group minerals, lovozerite group minerals, parakeldyshite.
