Magmatic replacement of carbonate bodies involving formation of nepheline syenites and other alkalic rocks, with example of Dezhnev massif

Abstract

In a nepheline syenite massif produced by an infiltrational replacement of limestones by a magmatic granitizing solution, the four recognizable nearly concentric zones (from granite up to and including nepheline syenite), as well as the type and the sequence of the general and the zonal parageneses of minerals, are functionally related to the progressively rising chemical potentials of the alkalies, from the core to the periphery of the massif, in a demonstrable harmony with the phase rule and with the Korzhinskiy's principle of the acid-base interactions. — V.P. Sokoloff