Early Permian chondrichthyans of the Middle and South Urals [PDF]
Revista Brasileira de Paleontologia, 2005 Very diverse Early Permian chondrichthyan assemblages occur in the Asselian to Artinskian of the Middle and South Urals. They include numerous symmoriid teeth of “Denaea” decora Ivanov, Cobelodus obliquus sp. nov., Stethacanthus and Denaea; the teeth of the ctenacanthoid Heslerodus; the teeth of the synechodontiform Synechodus antiquus sp.
A. P. Ivanov
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FEATURES OF MORPHOLOGY AND CHEMICAL COMPOSITION OF NATIVE GOLD FROM THE MURTYKTY DEPOSIT, SOUTH URALS [PDF]
Минералогия, 2021 The morphology and chemical composition of native gold from the Murtykty deposit (South Urals) are discussed in the paper. Native gold is subdivided into five types: 1) inclusions in sulfides, 2) grains in fractures and interstices of pyrite and other ...
N.S. Chukhareva +5 more
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MINERAL FORMS OF TUNGSTEN AT THE POROKHOVSKOE AND YUGO-KONEVSKOE DEPOSITS (SOUTH URALS) [PDF]
Минералогия, 2023 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.
D.A. Rogov +5 more
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Apatite of alkaline rocks of the Vishnevogorsky complex, South Urals [PDF]
МИНЕРАЛОГИЯ (MINERALOGY), 2019 Apatite Ca5(PO4)3(F,Cl,OH) is a widespread accessory mineral of alkaline rocks of the Vishnevye Mountains in the Urals. There are small bodies of carbonatites and micaceous rocks, where apatite is a rock-forming mineral. The rocks mostly contain fuorapatite and, locally, apatite-(CaOH). The Cl-bearing apatite is rare. Apatite is enriched in Na2O (up to
V.A. Popov
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MINERALOGY OF CHROMITITES OF MOUNT POKLONNAYA OF THE KARABASH MASSIF, SOUTH URALS [PDF]
Минералогия, 2022 Mineral composition of chromitites and host serpentinites from a quarry at Mt. Poklonnaya of the Karabash serpentinite massif is studied using optical and electron microscopy.
V.I. Popova +4 more
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FORMATION CONDITIONS OF THE BRONZE AGE METALLURGICAL SLAGS OF THE SOUTH URALS AND KAZAKHSTAN [PDF]
Минералогия, 2020 Four main mineralogical types are identified among a wide variety of metallurgical slags from the Bronze Age sites of the South Urals and Kazakhstan: chromite-bearing olivine, sulfide-bearing olivine, glassy sulfide-bearing and pyroxene.
M.N. Ankushev +2 more
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POLYAKOV LOG COARSE GARNET OCCURRENCE IN THE SOUTH URALS [PDF]
Минералогия, 2023 Ontogenic modeling of the origin of coarse garnet of the Polyakov log occurrence (South Urals) in a fine-grained schist sequence allowed the authors to conclude on its metasomatic growth with the replacement of chlorite aggregates.
V.A. Popov +2 more
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Authigenic rhabdophane from brown iron ore of the oxidation zone of the Babaryk massive sulfide occurrence (South Urals): scanning electron microscope (SEM) and electron backscattered diffraction (EBSD) study [PDF]
European journal of mineralogy, 2021 . Rhabdophane (Ce0.34−0.43Nd0.13−0.14Ca0.06−0.29La0.08−0.11Y0.05−0.12Pr0.03−0.05Sm0.02−0.05Gd0.02−0.05Fe0−0.04Dy0.00-0.01)0.97-1.01((P0.69−0.96S0.04−0.31)1.00O4)⚫H2O is found in a Fe3+-oxyhydroxide nodule (brown iron ore) collected from the upper part of
Е. В. Белогуб +4 more
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Production of Pigments on the Basis of Titanium Tetrachloride [PDF]
MATEC Web of Conferences, 2021 The article describes the manufacture of titanium dioxide, or titania, on the basis of titanium tetrachloride. The main technological requirements for the production of titania are listed, the most prospective raw materials for the chlorination method ...
Vyboishchik Alexander, Popov Mikhail
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U-Th-He Geochronology of Pyrite from the Uzelga VMS Deposit (South Urals)—New Perspectives for Direct Dating of the Ore-Forming Processes [PDF]
Minerals, 2020 We report on the application of the U-Th-He method for the direct dating of pyrite and provide an original methodological approach for measurement of U, Th and He in single grains without loss of parent nuclides during thermal extraction of He.
O. V. Yakubovich +4 more
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