СRYSTAL-FRACTIONATION IN SITU AT GENERATION ROCK TYPES OF TIGIREKSKII MASSIVE MOUNTAIN ALTAY
Data on chemical composition of accessory minerals (sphen and apatite) of rock types Tigirekskii massive Mountain Altay lead. Accessory minerals study in diorite, monzodiorite, syenite, granodiorite, granite and moderate alkali granite. Sphen and apatite has zone building (dark nucleus of crystal and bright rim). Oscillation, simple and «fir-tree» zonation in accessory minerals arrange. Distribution of rare and rare earth elements in minerals study. Stable decrease of sum REE and ratio (La/Sm)N in rim of zone crystals, pointing on the depletation of melts in result of early saturation nucleus zone of crystals apatite and sphen, happening in frame in situ.