Аңдатпа
The geological structure, magmatic evolution and ore content of the Delbegetei granite massif located in the northwestern part of the Char zone are considered in the work. The massif of early Triassic age (249-240 Ma) is composed mainly of leucocratic granites and is characterized by a multiphase intrusive structure. Based on petrographic and mineralogical- geochemical data, five intrusive phases were identified from early granosyenites to late leukogranites, the formation of which is associated with a two-stage model of magmatism. Hydrothermal-metasomatic processes are associated with the late stages of the evolution of granite magmatism, which led to the development of tin, tin-beryllium, tungsten and emerald mineralization. The stage of rudogenesis has been established: turmalinization, greisenization, albitization, microclinization and quartzification. It was concluded about the prospects of the Delbegetei massif for the opening of new rare metal objects.