East Kazakhstan Rare Earths Deposits Formation

Abstract

The main rare-metal structure of the region is the Kalba-Narym granitoid belt of the northwestern direction, formed in the Hercynian cycle in a post collisional (orogenic) geodynamic setting. The spatialgenetic relationship of the leading geological-industrial type of deposits of rare-metal pegmatites (Ta, Nb, Be, Li, Cs, Sn) with medium-coarse-grained biotite granites of the 1 st phase of the Kalba complex P1 is emphasized. The revealed laws of formation and spatial accommodation of deposits of rare metals in Kalba Narym zone and other geological structures are the important criterion for forecasting and searching the new ores objects on East Kazakhstan territory.