type intrusive series of the far east belt of lithium-fluoric granites and its ore content

The evolution and ore content of granitoid magmatism in the far east belt of lithium-fluoric granites lying in the russian sector of the pacific ore belt have been studied. correlation of intrusive series in the novosibirsk-chukotka, yana-kolyma and sikhote-alin granitoid provinces of the studied region allowed to establish the unity of composition, evolution, and ore content of the late mesozoic granitoid magmatism. on this basis, a model of the type potentially ore-bearing intrusive series of the far east belt of lithium-fluoric granites has been developed: complexes of diorite-granodiorite and granite formations → complexes of monzonite-syenite and granite-granosyenite formations → complexes of leucogranite and alaskite formations → complexes of rare-metal lithium-fluoric granite formation.  the main petrological trend in granitoid evolution is increasing silicic acidity, alkalinity, and rare-metal-tin specialization along with decreasing size and number of intrusions. at the end of the intrusive series, small complexes of rare-metal lithium-fluoric granites form. the main metallogenic trend in granitoid evolution is an increasing ore-generating potential of intrusive complexes with their growing differentiation. ore-bearing rare-metal-granite magmatism of the russian far east developed in the late cretaceous and determined the formation of large tungsten-tin deposits with associated rare metals: ta, nb, li, cs, rb, in in areas with completed intrusive series. incompleteness of granitoid series of the pacific ore belt should be considered as a potential sign of blind rare-metal-tin mineralization. the far east belt of lithium-fluoric granites extends to the chinese and alaskan sectors of the pacific belt, which allows the model of the type ore-bearing intrusive series to be used in the territories adjacent to russia.