Potassic radiogeochemical specialization as a product of differentiation of ore-bearing magmatic complexes

Regularities in concentration variation of some elements (Na, Pb, Zi, Ba, Sr, U, Th, K) drawn together to the ore formation process during the rock formation with potassic radiogeochemical specialization are considered. Geochemical peculiarities of Hercynic magmatism in the given region permit to follow in magmatic melts the formation stages of abyssal ''potassic wave'' in the association with chalcophile metals. Emanation differentiation in the process of prolonged fluid working of thick magmatic column is seemed to be the most probable process leading to the ultrapotassium rhyolites formation. The ultrapotassium rhyolite formation, which are depleted with thorium, possess radiogeochemical specialization and control the disposition of chalcophile type mineralization, is related to final stages of magmatic differentiation and S2- activity growth