REE distribution in granites of different types as well as in fluorine
minerals of accompanied tungsten deposits of tungsten-ore Mongolian r
egions has been considered. Evolution of REE distribution in the serie
s melt - solution is traced on the basis of REE distribution in the se
ries granites - magmatic topazes and fluorites in granites - hydrother
mal topazes and fluorites of ore hydrothermal assemblages.