Institute of Geology of Komi Science Center of Ural Department of Russian Academy of Sciences (Syktyvkar, Russia):

Kuznetsov S. K., Deputy Executive Officer on Scientific Problems, Doctor of Geological and Mineralogical Sciences, e-mail: kuznetsov@geo.komisc.ru

Burtsev I. N., Deputy Executive Officer on Scientific Problems, Candidate of Geological and Mineralogical Sciences

Lyutoev V. P., Leading Researcher, Candidate of Geological and Mineralogical Sciences

In connection with the problem of high quality quartz raw materials, there are considered the mineralogical and technological peculiarities of vein and rock-forming quartz of various areas of the Timan North Ural region. There is shown that considerable amount of resources of milky-white and transparency quartz and rock crystal are widely spread on Nether-Polar and Polar Urals. These resources can be used in various industries, in particular, for the synthesis of monocrystals and glass melting (Zhelannoe deposit, etc.). Together with it, production of extra pure quartz concentrates on the basis of large giant-grained poor transparent quartz, containing the main part of estimated reserves, is interfaced to a number of difficulties, caused mainly by the presence of the smallest gas and fluid inclusions. The following types of quartz are more preferable:
- high transparency quartz, which is observed in the form of sites in the bulk of poor transparency vein quartz;
- granulated quartz, which composes the veins, developed mainly within high grade of metamorphosed Precambrian rocks (Nyartinsky, Harbeysky blocks, etc.) in the North of Ural. During the concentration of such quartz with removal of unstructured impurities, it is possible to obtain the high quality concentrates, corresponding to the level of modern world requirements (Iota-STD and Iota-4 grade). Concerning the high-quality quartz raw materials, an attention should be paid not only to hydrothermal vein quartz deposits, but also to the deposits of other genetic types, which stay rather insufficiently researched, such as: quartz sands, sandstones, conglomerates, as well as concentration tailings of Timan region leucoxene ores, which amounts will be very significant during the development of Yaregskoe deposit.

This work was carried out with the support of the following programs:
- Program of Presidium of Russian Academy of Sciences No. 27 (project of Ural Department of Russian Academy of Sciences No. 12-P-5-1027 (12-П-5-1027));
- project of oriented fundamental researches of Ural Department of Russian Academy of Sciences No. 12-5-031-UPP (12-5-031-УПП);
- program of Ural Department of Russian Academy of Sciences “Arctic” No. 12-5-6-016.

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