The long-term studies of the fluid regime of endogenic processes that formed the continental earth's crust have made it possible to reveal principal peculiarities in the global fluid transfer from the deep lithos-phere to its upper layers, where they participated in the formation of the granite-gneiss layer 1. Against the background of this global trend, different autonomous fluid systems were locally also in progress. The latter are divisible into two groups. The first of them includes most widespread fluid systems related to the development of fluidized frequently differentiated magmatic systems and referred in available classifications to products of emanation-induced differentiation of magmatic melts. They are mostly high-sulfur reduced systems, which gave birth to poly metallic, gold, and silver deposits, and high-fluoric boron-enriched fluid systems connected with the formation of acid and alkaline granitoid magmas. The latter are usually accompanied by rare-metal, tin, and tungsten deposits.
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