MINERAL FORMS OF TUNGSTEN AT THE POROKHOVSKOE AND YUGO-KONEVSKOE DEPOSITS (SOUTH URALS)

The ore hand specimens and technological ore samples from the Porokhovskoe and Yugo-Konevskoe W greisen deposits in the South Urals are studied. The major W minerals of primary ores at both deposits include hübnerite and scheelite. The secondary and accessory minerals are pyrite, chalcopyrite and molybdenite, rare minerals include sphalerite, galena, bismuthinite, aikinite, unidentified chalcogenides and sulfosalts, magnetite, rutile, ilmenite, titanite and columbite. The veins are mainly composed of quartz and muscovite with subordinate calcite, dolomite and fluorite, rare chlorite and amphibole and accessory zircon, apatite and uraninite. No zonation in the distribution of wolframite with various Fe content is identified relative to the Yugo-Konevsky granite pluton, however, wolframite of the Northern area of the Porokhovskoe deposit is enriched in Fe compared to that of the Central area and Yugo-Konevskoe deposit. In addition to veined wolframite and scheelite, the oxidized ores also contain Fe and Mn oxyhydroxides, malachite, pyromorphite and bromargyrite. Tungsten is part of Mn and Fe oxyhydroxides, which replace wolframite and less often sulfides. The WO3 content of pseudomorphic Mn and Fe oxyhydroxides after hübnerite reaches 18 wt. %. Single grains of stolzite and russellite are found. According to the results of phase chemical analysis of technological samples, the amount of tungstite in oxidized ores is minor, therefore all ores of both deposits were ascribed to primary type

INNOVATIVE TECHNOLOGIES FOR DETECTING AND DIAGNOSTIC OF TUBERCULOSIS IN CHILDREN AND ADOLESCENTS: ACHIEVEMENTS AND PROBLEMS

Objective of the research: to assess the effect of recombinant tuberculosis allergen (RTA) in tuberculosis infection (TI) screening in children and adolescents on the epidemiological indicators of tuberculosis (TB) and to study the economic efficiency of using RTA in a large industrial region. Materials and methods: according to medical records, two periods were analyzed, 2011–2015 and 2016–2019, before and after the RTA screening introduction, respectively. Results: it was found that using RTA test in practice for the differential diagnosis of infectious and post-vaccination allergies led to an improvement in the epidemic situation among the child population and a significant economic effect – the savings during the year amounted to 12 385 407,84 rubles. RTA allows to reveal latent TI and develop scientific approaches to studying predictors of the clinically expressed TB, which is extremely important in modern conditions.</jats:p