Petrological and geochemical peculiarities of syenites in Velyka Vyska massif (southern part of Korsun-Novomyrgorod pluton, Ukraine)
Syenites of Velyka Vyska massif (southern part of Korsun-Novomyrgorod pluton, Ukraine) belong to highly differenciatcaed varieties. They are characterized by femic minerals very enriched in iron (fayalite, hedenbergite, hastingsite) as well as by high contents of such incompatible elements as Zr, TR, Y partly Nb. These syenites are similar to rocks of the same name from South Kalchyk and Yastrybetsky massifs to witch the denosits rich in Zr and TR (Azov and Yastrybetsky) are related.