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HIGH-PURITY VEIN QUARTZ – MINERAL RAW MATERIALS OF POLYCHRONOUS AND POLYGENOUS GENESIS

V. N. Ogorodnikov, Yu. A. Polenov, A. N. Savichev, V. V. Babenko

Ural State Mining University, Ekaterinburg, Russia

The mineral raw materials base of Russian quartz, used in high-tech manufacturings, traditionally unites deposits of piezooptical quartz, clear quartz, granular, clear and milkiness-white vein quartz. The demand for quartz and reserves of different quartz raw materials is ambiguous. Special quartz materials and products based on them are increasingly used in radioelectronic, aviation, chemical, electrotechnical, metallurgical and other branches of the national economy. Clear quartz and optical glasses and quartz products are being increasingly used as a structural material for the equipment of artificial satellites and spacecrafts, panoramic glazing of aircrafts, manufacture of night vision devices, optical locators, systems of interception and optical communication, and have application in the construction of radar installations and in high-speed computers. There is a sharp increase in a need for quartz tubes and rods for the production of optical fibers and superthin quartz ones. The authors revealed that the quality of quartz raw materials is caused by its structural and texture features and physicochemical factors determined by its genesis and in turn define the technological properties of quartz. All of this allowed them to identify 7 genetic types of vein quartz. Two types formed in the Precambrian: one – in the geodynamic setting of cratonization, the second – in the geodynamic setting of rifting, the rest – in collision geodynamic settings. All these types are located in 5 structural and formational zones of the Ufaley metamorphic complex.

Keywords: Ufaley quartziferous region, quartz, purity, clarity, structural impurities, genetic types, geodynamic regimes, metamorphic differentiation, metasomatosis, recrystallization.

DOI 10.20403/2078-0575-2018-1-88-98