Spatial position of mica-bearing zones in the bodies of granite-pegmatites of the Mam province
Abstract
It is known that in the Mamsko-Chuyskaya pegmatite province - the main supplier of industrially valuable large-crystalline muscovite - there are several types of mica deposits, different in the form of ore bodies, structure and geological conditions of occurrence. Among them, of special interest are mica-bearing zones developed in large bodies, mainly composed of granite-pegmatite material. The bodies of these rocks are found in gneisses and crystalline schists in the form of isolated interlayered deposits and secant dykes or form a suite of converged interlayered deposits connected by a network of secant apophyses. N. V. Petrovskaya called such formations of convergent bodies of granite-pegmatite separated by interlayers of metamorphic rocks giganto-migmatites ...
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