 | | Journal (article/letter/editorial) | | titanium placers (Fig. 1) with the leucoxene and ilmenite–leucoxene ore type in the world. The most significant...contains ~40% of all balance resources of titanium in Russia; according to the expert estimations, the total...Prepaleozoic base ment, within which ilmenite–leucoxene rocks (metapelites) of Riphean age were eroded...in order to exclude any influ ence of oil on leucoxene ore. The sand–clay titanium bearing series of...Geochemistry, Russian Academy of Sciences, Moscow, Russia email: cher@igem.ru (Fig. 2) was reliably |  | Patyk-Kara, N. G., Levchenko, E. N., Stekhin, A. I., Barsegyan, V. V., Bochneva, A. A., Chizhova, I. A., Andrianova, E. A., Dubinchuk, V. T. (2008) Mineral assemblages of titanium-zirconium sands at the Central deposit, the east European platform. Geology of Ore Deposits, 50 (3) 218-239 doi:10.1134/s1075701508030045 | Journal (article/letter/editorial) | | Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia bInstitute of Mineralogy, Geochemistry,...Chemistry of Rare Elements, ul. Veresaeva 15, Moscow, 121357 Russia cNoril’sk Nickel Mining and Metallurgical...Company, Voznesenskii per. 22/13, Moscow, 125009 Russia dAll-Russia Research Institute of Mineral Resources...Resources, Staromonetnyi per. 31, Moscow, 119017 Russia Received June 15, 2007 Abstract—The study of mineral...sphere of interest until 1991, when the demand of Russia for Ti and Zr concentrates sharply increased because |  | | Journal (article/letter/editorial) | | of Science, 39, prosp. Lenina, Yakutsk 677000, Russia * Correspondence: ai.zhuravlevgeo@gmail.com; Tel...apatite, tita– omagnetite in association with leucoxene, titanite, perovskite, and andradite–schorlomite...andradite–schorlomite omagnetite in association with leucoxene, titanite, perovskite, and andradite–schorlomite garnet...aegirine (Aeg); “case‐shaped” zoned substance of leucoxene (Lcx) with small inclusions Ce–monazite (Mnz)...apatites (Ap) and “case-shaped” zoned substance of leucoxene (Lcx) with small inclusions Ce–monazite (Mnz) |  | | Journal (article/letter/editorial) | | FSU, which are located in Russia, Kazakhstan, and Ukraine. Efforts of Russia and Kazakhstan to explore...mining and processing sites in three republics—Russia, Kazakhstan, and Ukraine. Upon the break-up of...80% of the sponge production was taking place in Russia and Kazakhstan (Anoshkin et al., 1994, p. 4; Interfax...practically all milled products were produced in Russia. As a consequence of this uneven interrepublican...its own borders. In the case of Kazakhstan and Russia, this involves the exploration and development |  | | Journal (article/letter/editorial) | | University, Universitetskaya pl. 1, Voronezh, 397006 Russia Received May 12, 2011 Abstract—The early and late...Voronezh Anteclise, as well as the Baltic Shield, Moscow Syneclise, and the Volga–Ural Anteclise. The age...Chernozem region into a major source of these metals in Russia. The Voronezh Anteclise situated in the Central...region is one of the most important placer areas in Russia (Bykhovsky and Tigunov, 2006; Dmit riev, Secretarev...garnet, staurolite, zir con, rutile, anatase, leucoxene, and apatite reaches a few percents of the total |  | | Journal (article/letter/editorial) | | elements in bauxites: the Devonian Schugorsk deposit, Russia L. E. MORDBERG1,2,3, C. J. STANLEY2 AND K. GERMANN3...Institute (VSEGEI), Sredny pr 74, St. Petersburg, Russia The Natural History Museum, Cromwell Road, London...the Devonian Schugorsk bauxite deposit, Timan, Russia. Chemical analyses of the minerals were obtained...aegirine and riebeckite with the formation of ‘leucoxene’, which is the main concentrator of Nb, Cr, V...distribution of Nb (up to 16 wt.%). Vein-like ‘leucoxene’ is also observed in association with organics |  | Ding, Bo, Liu, Hong-Xu, Qiu, Lin-Fei, Zhang, Chuang, Xu, De-Ru (2022) Ilmenite Alteration and Its Adsorption and Catalytic Reduction in U Enrichment in Sandstone-Hosted U Deposits from the Northern Ordos Basin, North China. Minerals, 12 (2) 167 doi:10.3390/min12020167 | Journal (article/letter/editorial) | | Ilmenite was completely or partially altered to leucoxene and anatase along its rim and crack in ore-bearing...via TiO2 (leucoxene and anatase) catalytic reduction. Ilmenite was altered into porous leucoxene that can...can adsorb U as uraniferous leucoxene and Ti-coffinite (I) and framboidal pyrite directly by reactions...Asia. For example, at Dalmatov uranium deposit, Russia, nearly 30% of U exists in the form of finely dispersed...chemically adsorbed by leucoxene (U6+ ) [8]. Some researchers have suggested that leucoxene formed by ilmenite |  | | Journal (article/letter/editorial) | | Sciences (GIN RAN), Pyzhevskii per. 7, Moscow, 119017 Russia email: nchamov@yandex.ru Received May 25...Depression, two largest structures located beneath the Moscow Syneclise are analyzed. It has been established...nous–carbonate rocks. It represents the basal unit of the Moscow Syneclise, which marks the plate stage in development...unclear so far. Geodynamic nature of the Central Russia Aulaco gen and Orsha Depression remains debatable...a grabenshaped trough in the axial part of the Moscow Syneclise (Shatsky, 1964). Pre cisely this trough |  | | Journal (article/letter/editorial) | | Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia Received June 4, 2012 Abstract—The comprehensive... 60 CHEFRANOVA, LALOMOV 30° 40° 50° I 55° Moscow NR 4 EUP 3 II VA 2 Kiev U III 1 US 45° 6...Mineragenic demarcation of the southern European part of Russia and localization of raremetal–titanium placers...(Table 1). The Tibearing minerals (ilmenite, leucoxene, rutile, titanite) and zircon are combined in...to the super gene alteration of the mineral. Leucoxene is a product of alteration of Ti minerals, mainly |  | | Journal (article/letter/editorial) | | of hypergene oxidation with the formation of leucoxene with an anatase structure and further sorption...Geochemistry, Russian Academy of Sciences, Moscow, Russia on registration of a wide abundance of processes...data of A.B. Khalezov et al. [7], ilmenite (+leucoxene) comprises 30–40% of the whole mineral composition...during their oxidation “with the formation of leucoxene with anatase structure in the course of dehydration...Evolution and Mineral Deposits, Collected Papers (VIMS, Moscow, 2008) [in Russian]. 7. A. B. Khalezov, R. F. Dankovtsev |  | | Journal (article/letter/editorial) | | Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia Received June 4, 2007 Abstract—The behavior...minerals, particularly by iron hydroxides and leucoxene, is its single stable species under oxidizing...large-scale investigations of uranium deposits in Russia and abroad aimed at the substantiating the ore-forming...disposal of SNF and high-level wastes (HLW) in Russia. The recognition of the behavior of uranium in...and its accumulation in secondary minerals (2): leucoxene, Fe oxides, and chlorite. Transparent polished |  | Maslennikov, V.V., Ayupova, N.R., Herrington, R.J., Danyushevskiy, L.V., Large, R.R. (2012) Ferruginous and manganiferous haloes around massive sulphide deposits of the Urals. Ore Geology Reviews, 47. 5-41 doi:10.1016/j.oregeorev.2012.03.008 | Journal (article/letter/editorial) | | Branch of Russian Academy of Science, 456317, Miass, Russia Department of Mineralogy, Natural History Museem...relics of primary albite, quartz phenocrysts and leucoxene (Fig. 9E). The red rims of the hyaloclasts are...formed in situ. Alumosilicate, titanomagnetite and leucoxene are completely decomposed in these quartz–hematite...reminiscent of desiccation cracks. Relic chlorite and leucoxene are preserved in the cores of some concentrically...matrix, sample T-2581-215.5, Talgan deposit; E — leucoxene (blue) in contact of chlorite-rich core of hyaloclast |  | Eppelbaum, L. V., Vaksman, V. L., Kuznetsov, S. V., Sazonova, L. V., Smirnov, S. A., Surkov, A. V., Bezlepkin, B. M., Katz, Yu. I., Korotaeva, N. N., Belovitskaya, G. I. (2006) Discovery of microdiamonds and associated minerals in the Makhtesh Ramon Canyon (Negev Desert, Israel) Doklady Earth Sciences, 407 (1) 202-204 doi:10.1134/s1028334x06020097 | Journal (article/letter/editorial) | | Geophysical Association, Moscow, Russia 4 Department of Petrology, Geological Faculty, Moscow State University...Leninskie gory, Moscow, 119992 Russia; e-mail: saz@geol.msu.ru 5 Geographical Faculty, Moscow State University... Leninskie gory, Moscow, 119992 Russia 6 Department of Placer Exploitation, Moscow State Geological–Prospecting...Miklukho-Maklaya 23, Moscow, 117873 Russia 7 Consultant on Applied Geology and Geophysics, Moscow, Russia 8 Paleontological...concentrated and sent to Moscow, where they were thoroughly analyzed in laboratories of the Moscow State University |  | Puchkov, V. N., Krasnobaev, A. A., Sergeeva, N. D., Busharina, S. V., Rodionov, N. V., Bayanova, T. B. (2014) Archean metabasic rocks at the base of the Riphean of the Bashkirian Meganticlinorium (Southern Urals) Doklady Earth Sciences, 457 (1) 835-841 doi:10.1134/s1028334x14070083 | Journal (article/letter/editorial) | | Academy of Sciences, Ufa, Russia b Bashkirian State University, Ufa, Russia c Zavaritskii Institute of...Yekaterinburg, Russia d Karpinskii Russian Geological Research Institute, Saint Petersburg, Russia e Institute...Russian Academy of Science, Apatity, Murmansk oblast, Russia email: puchkv@ufaras.ru (2) Biotite–quartz–amphibole...There are grains (1–2%) of titanite replaced with leucoxene and quartz. The groundmass contains individual...cherry 835 836 PUCHKOV et al. 0° 60° 60° 60° Moscow N RF1st Ufa RF3zl Berlin Paris RF1ai1 900 |  | | Journal (article/letter/editorial) | | Institute of NonFerrous and Precious Metals , Moscow Published online: 29 Jun 2010. To cite this article:... Institute of Non-Ferrous and Precious Metals, Moscow. 1 According to L.S. Kossov, it reaches 530 m...predominates (about 50%). Minor minerals are leucoxene, tourmaline, IGR 80/2 Downloaded by [New York...accessory minerals, in contrast to Northern Timan, leucoxene predominates (up to 65-70%). Minor minerals are...according to Kochetkov (1967), with the exception of leucoxene, for which a local origin has been demonstrated |  | | Journal (article/letter/editorial) | | Geological Institute, U.S.S. R . Academy of Sciences, Moscow (U.S.S.R.) (Received March 6, 1970) SUMMARY ...(ACCORDING TO VARIOUS AUTHORS AND THE DATA FILED AT THE MOSCOW ALL-UNION RESEARCH INSTITUTE OF GEOLOGICAL EXPLORATION:...well as transitions of sphene and ilmenite into leucoxene. Coarse sphene grains are for the most part broken...small fragments that are gradually enveloped by leucoxene films. These accessory minerals which are unstable...HORIZON 23-38 25-38 8-18 15-35 25-45 25-38 2040 Leucoxene 2-4 2-4 1-4 1-7 1-6 1-7 1-7 Fine-grained anatase |  | | Journal (article/letter/editorial) | | of the Karelian Craton, Southeast Fennoscandia (Russia) Evgeniya N. Svetova * and Sergei A. Svetov Institute...Institute of Geology KarRC RAS, Petrozavodsk 185910, Russia; ssvetov@krc.karelia.ru * Correspondence: enkotova@rambler...Research Centre, RAS (IG KRC RAS, Petrozavodsk, Russia). Thin sections were examined using Polam-211 optical...Uralian Branch, RAS (IG Komi SC UB RAS, Syktyvkar, Russia). The decomposition of calcite in phosphoric acid...Uralian Branch, RAS (IG Komi SC UB RAS, Syktyvkar, Russia). The 5.1. Host Rock decomposition of calcite in |  | Suiekpayev, Y.S., Sapargaliyev, Y.M., Dolgopolova, A.V., Pirajno, F., Seltmann, R., Khromykh, S.V., Bekenova, G.K., Kotler, P.D., Kravchenko, M.M., Azelkhanov, A.Zh. (2021) Mineralogy, geochemistry and U-Pb zircon age of the Karaotkel Ti-Zr placer deposit, Eastern Kazakhstan and its genetic link to the Karaotkel-Preobrazhenka intrusion. Ore Geology Reviews, 131. 104015pp. doi:10.1016/j.oregeorev.2021.104015 | Journal (article/letter/editorial) | | Sciences, Novosibirsk, Russia f Novosibirsk State University, Novosibirsk, Russia g K.I. Satpaev Institute... Kazakhstan h Kazan Federal University, Kazan, Russia b A R T I C L E I N F O A B S T R A C T Keywords:...Ti-Zr placer deposits of Kazakhstan, Ukraine and Russia (Fig. 1) represent dominantly continental formations...from ilmenite (Fe2+TiO3), rutile (TiO2), and leucoxene (an alteration product of ilmenite), as well as...of placers, north of the Ukrainian shield) and Russia (Arctic region containing Yarenga deposit and Primorje |  | | Journal (article/letter/editorial) | | University of Oil and Gas, Leninskii pr. 65, Moscow, 119991 Russia email: vgkuz@yandex.ru, olenovaksen@mail...and the less common leucoxene are irregularly distrib uted. In some places, leucoxene inclusions make up...fine coaly dispersion. Ore min erals occur as leucoxene (up to 3%) and less common iron sulfides (pyrite)...One can see mineral inclusions in some places. Leucoxene grains (0.01–0.35 mm) fill up some pore space...naukakh o Zemle” (New Ideas in Earth Sci ences), Moscow: MGGA, 1997, p. 39. Agafonova, G.V., Types of Lower |  | | Journal (article/letter/editorial) | | Sciences, Pervomaiskaya ul. 54, Syktyvkar, 167982 Russia b Institute of the Geology of Ore Deposits, Petrography...Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia Received February 15, 2010 Abstract—The...also occur as secondary inclusions in pores of leucoxene from the Pizhma deposit, as well as in Brazilian...(Shvetsova et al., 1989), as tiny inclusions in leucoxene grains from the Pizhma deposit, and in the recent...aluminophosphates are illpreserved in black sand and, as leucoxene, are identified in heavy concentrates at a distance |  | | Report (issue) | | corresponds to Sn1.12 Sb0.87 . (3) Baimka placer, Russia; by electron microprobe, corresponds to Sn1.13...Tamaná, Colombia). Association: Tin, zircon, “leucoxene”, rutile, apatite, barite, celestine, scheelite...herzenbergite, cassiterite, lead (Baimka placer, Russia) Distribution: From the Elkiaidai River, eastern...gold-PGE placer, western Chukotka, Russian Far East, Russia. In the Rio Tamaná, the Department of Chocó,...territory of the former Soviet Union. Ocean Pictures, Moscow, 195. All rights reserved. No part of this publication |  | Samatova, L. A., Gvozdev, V. I., Kienko, L. A., Voronova, O. V., Sorokina, V. A. (2011) Mineralogical-technological peculiarities of the ores of the Skrytoe Scheelite deposit and prospects for their dressing. Russian Journal of Pacific Geology, 5 (6) 531-543 doi:10.1134/s1819714011060091 | Journal (article/letter/editorial) | | Sciences, ul. Turgeneva 51, Khabarovsk, 680000 Russia email: Samatova@hg.febras.ru bFar East Geological...Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia email: gvozdev@fegi.ru Received March 11, 2011...microporphyroblasts of amphibole and garnet; leucoxene, titanomagnetite, titanite, and sulfides compose...smaller (less than 0.1 mm) grains of titanite and leucoxene. In such areas, the schists often contain clinozoisite...sulfotellurides of the joseite group, and others), leucoxene, titanite, zircon, and minerals from the oxidation |  | | Journal (article/letter/editorial) | | zircon. There a r e isolated grains of hornblende, leucoxene, zoisite, tourmaline, and garnet. The chemical...underlying beds, while the proportions of zircon and leucoxene a r e som w h a t elevated. X-ray diffraction...usloviya nakopleniya terrigennykh otlozheniy zircon, leucoxene, and epidote as the principal rifeya Omolonskogo...e dominated by hematite, zircon, apatite, and leucoxene. There a r e smaller amounts of rutile, hornblende...and hornblende. There a r e smaller amounts of leucoxene, anatase, and tourmaline. . The clay minerals |  | | Journal (article/letter/editorial) | | of Sciences, Miass, Chelyabinsk oblast, 456317 Russia Received January 12, 2006 Abstract—Three types...primary veins. The first finding of chalcophanite in Russia is confirmed by chemical, optical, and X-ray data...manganese hydroxides; chlorite intergrowths; leucoxene; and sporadic grains of unoxidized pyrite, acicular...heavy concentrate is composed of biotite, rutile, leucoxene, goethite, colloform aggregates of manganese hydroxides...and moschellandsbergite have been described in Russia only from the Table 1. Composition (wt %) and |  | | Journal (article/letter/editorial) | | Sciences, ul. Pervomayskaya 54, Syktyvkar, 167982 Russia tions, shonkinite–porphyres mainly consist of... garnet, periclase, zircon, rutile, anatase, leucoxene, corundum, kianite, pyrite, 216 FIRST OCCURRENCE...(Diamond Deposits of the Russia and the World (Prediction Basements)), Moscow: Geoinformark, 2000. 2....almazov mira (Primary Diamond Deposits of the World), Moscow: Nedra, 1998. 6. Chaikovskii, I. I., Petrologiya...Zapadnogo Tienshan (Tectonics of the Western Tienshan), Moscow: Nauka, 1989. 8. Shumilova, T. G., Mineralogiya |
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