Complex Characteristic of Zircon from Granitoids of the Verkhneurmiysky Massif (Amur Region)

The study presents a complex characteristic of zircon from the Verkhneurmiysky intrusive series with Li-F granites. A wide range morphological and chemical properties allowed us to obtain new information on formation alteration biotite zinnwaldite granitoids determine its features, which contribute correct definition granites formed directly before tin mineralization. reviled trends morphology composition evolution in are: high-temperature morphotypes are followed by low-temperature ones more complicated internal structure secondary zones, mineral inclusions, pores, cracks; increasing concentration volatile (H2O, F), large ion lithophile (Cs, Sr), high field strength (Hf, Nb) rare-earth elements decreasing crystallization temperatures determining role fluid phase (predominantly, F) trace element accumulation. cores is very similar. However, rims much enriched compared those first provides data conditions granitoids, including ones.