| | Journal (article/letter/editorial) | PAPER Experimental studies of Ta2O5 and columbite–tantalite solubility in fluoride solutions from 300...granite. Experimental studies of Ta2O5 and columbite–tantalite (Mn,Fe)(Nb,Ta)2O6 solubility were carried...also high (10−3–10−2 m). The dependence of columbite–tantalite (Nb2O5-59 wt. %, Ta2O5-18 wt. %) solubility...Academy of Sciences, Chernogolovka, Moscow Oblast, Russia e-mail: zaraisky@iem.ac.ru V. Korzhinskaya e-mail:...concentration. In NaHCO3, Na2CO3, and HCl solutions columbite–tantalite solubility is low. Even in 1 m chloride solutions | | | Journal (article/letter/editorial) | Rub 3 1VIMS (All Russia Scientific Institute of Mineral Resources), Moscow, Russia 2 Faculty of Science...and Geochemistry), Academy of Sciences, Moscow, Russia With 11 Figures Received September 10, 1996; revised...granite with 24 to 212ppm Ta contains Ta-rich Mn columbite, uranmicrolite and strneverite (tantalian rutile)...postmagmatic stages of granite evolution. Ta-rich columbite formed as a result of albitization dominant at...the granite cupola, whereas magmatic Nb-rich columbite is present throughout the entire profile of the | | Zaraisky, G. P., Aksyuk, A. M., Devyatova, V. N., Udoratina, O. V., Chevychelov, V. Yu. (2009) The Zr/Hf ratio as a fractionation indicator of rare-metal granites. Petrology, 17 (1) 25-45 doi:10.1134/s0869591109010020 | Journal (article/letter/editorial) | Institutskaya 4, Chernogolovka, Moscow oblast, 142432 Russia e-mail: zaraisky@iem.ac.ru b Institute of Geology...Pervomaiskaya ul. 54, Syktyvkar, 167610 Komi Republic, Russia Received June 11, 2008 Abstract—The Zr–Hf geochemical...Ta deposits of the “apogranite” type: Orlovka, Etyka, and Achikan. The Kukul’bei Complex includes also...differentiated massifs of alkaline granites. (Aga) district 150 km west of it (Fig. 2). The area where the...districts in eastern Transbaikalia: the Kukul’bei district (after which the complex was named) and the Khangilai | | Syritso, L. F., Badanina, E. V., Abushkevich, V. S., Volkova, E. V., Terekhov, A. V. (2018) Fertility of Rare-Metal Peraluminous Granites and Formation Conditions of Tungsten Deposits. Geology of Ore Deposits, 60 (1) 33-51 doi:10.1134/s1075701518010063 | Journal (article/letter/editorial) | Institute of Earth Sciences, St. Petersburg, 199034 Russia of Precambrian Geology and Geochronology, Russian...199034 Russia c Karpinsky Russian Geological Research Institute, St. Petersburg, 199106 Russia *e-mail:...greisenization in RPG. In Li–F granite massifs (Orlovka, Etyka, Achikan, Turga), no substantial gain in W has been...zinnwaldite–topaz veins predominate (Staraya (Old) Etyka deposit, Ferberitic ore occurrence); wolframite...Branch of the Physicotechnical Institute, RAS, Russia. The analytical results are given in Table 1. As | | Zaraisky, G. P., Aksyuk, A. M., Devyatova, V. N., Udoratina, O. V., Chevychelov, V. Yu. (2008) Zr/Hf ratio as an indicator of fractionation of rare-metal granites by the example of the Kukulbei complex, eastern Transbaikalia. Petrology, 16 (7) 710-736 doi:10.1134/s0869591108070047 | Journal (article/letter/editorial) | Sciences, Chernogolovka, Moscow oblast, 142432 Russia e-mail: zaraisky@iem.ac.ru b Institute of Geology...Sciences, Pervomaiskaya ul. 54, Syktyvkar, 167610 Russia Received February 12, 2008 Abstract—The concept...host apogranite-type tantalum deposits (Orlovka, Etyka, and Achikan). In addition to three granite phases...lower. Their typical examples are the Orlovka and Etyka deposits in eastern Transbaikalia, where Ta–Nb mineralization...mineralization is represented by fine columbite–tantalite and pyrochlore–microlite grains disseminated | | Chevychelov, V. Yu., Borodulin, G. P., Zaraisky, G. P. (2010) Solubility of columbite, (Mn, Fe)(Nb, Ta)2O6, in granitoid and alkaline melts at 650–850°C and 30–400 MPa: An experimental investigation. Geochemistry International, 48 (5) 456-464 doi:10.1134/s0016702910050034 | Journal (article/letter/editorial) | Vol. 48, No. 5, pp. 485–495. Solubility of Columbite, (Mn, Fe)(Nb, Ta)2O6, in Granitoid and Alkaline...Sciences, Chernogolovka, Moscow oblast, 142432 Russia email: chev@iem.ac.ru Received November 10, 2008...Abstract—This paper reports experimental data on columbite solubility in model watersaturated Li and Frich...of alumina and alkalis. It was found that the columbite solubility is strongly affected by melt composition...subaluminous and peraluminous melts at the contact with columbite are lower by at least an order of magnitude. The | | | Journal (article/letter/editorial) | economically important minerals are oxides. The columbite-tantalite and pyrochlore-microlite groups are the most...Pyrochlore is the main ore mineral for Nb and tantalite is the principal ore mineral for Ta. Both minerals...whereas tantalite [(Fe,Mn)Ta2 O6 ] is an end member of the solid solution series with columbite [(Fe,Mn)Nb2...of Nb and Ta mineralization as it lies between Russia and China, which both have in neighbouring parts...mineralized stocks. They include pyrochlore and columbite-tantalite, which are mineralized stocks. They include | | | Journal (article/letter/editorial) | lithium–fluoride granites of the Orlovskii and Etyka ore fields in Eastern Transbaikalia are constituted...constituted of minerals of the columbite–tantalite and pyrochlore– microlite series [2, 3]. Experimental data...Russian Academy of Sciences, Chernogolovka, 142432 Russia *e-mail: chev@iem.ac.ru In preparing the experiments...authors’ earlier data upon the dissolution of columbite and tantalite. Fig. 1. Temperature dependence of the...than that upon dissolution of less niobiumrich columbite (58 wt % of Nb2O5) [6, 8] and even considerably | | | Journal (article/letter/editorial) | FROM THE ORLOVKA TANTALUM DEPOSIT, TRANSBAIKALIA, RUSSIA: MICROTHERMOMETRIC EVIDENCE FELIX G. REYF§ Geological...Academy of Sciences, Sakhyanova 6a, Ulan-Ude, 670047, Russia REIMAR SELTMANN§ Department of Mineralogy, Natural...Academy of Sciences, Chernogolovka, Moscow District, 142432, Russia ABSTRACT Quartz- and topaz-hosted melt...the Orlovka tantalum deposit, in Transbaikalia, Russia. Certain quartz and topaz grains, similar to most...crystals that contain melt inclusions and columbite–tantalite microcrystals in the same growth-zones suggests | | | Journal (article/letter/editorial) | latest stages of magmatic crystallization, and columbite can originate from recrystallization of mica....often attributed to the crystallization of columbite–tantalite [(Mn2?, Fe2?) (Ta, Nb)2O6] (Linnen and Keppler...could be responsible for early saturation of columbite–tantalite in pegmatites. The purpose of this paper... 150 nk 250 Sn (Yin et al. 1995) Orlovka, Russia Ta-granite 140 nk 150 200 1.3 100 Ma—millions...The primary ore mineral in Ta deposits is columbite– tantalite (Linnen et al. 2012). A number of studies | | | Journal (article/letter/editorial) | Museum, Russian Academy of Sciences, Moscow, 125009 Russia *e-mail: a.tkachev@sgm.ru Received December 21...albite-spodumene rare-metal pegmatites with tantalite-columbite, microlite, and ixiolite in the Ancient Gneiss...tantaloniobates. They are usually tantalite and/or Ta-rich columbite, but a noticeable, sometimes decisive...(58) Dajishan; (59) Yichun; (60) Orlovka; (61) Etyka; (62) Baihuanao; (63) Kougarok; (64) Toongi; (65)...Taghawlor Xianghualing Dajishan Yichun Orlovka Etyka Baihuanao Kougarok Toongi Baerzhe P P P G G G G | | Bezmen, N. I., Gorbachev, P. N., Viryus, A. A., Salova, T. P. (2015) Solubility of ZrO2, HfO2, Ta2O5, Nb2O5, and H2O + H2 in fluid-saturated haplogranite melt at 100 MPa, 800°C, and variable redox conditions. Geochemistry International, 53 (6) 565-571 doi:10.1134/s0016702915060026 | Journal (article/letter/editorial) | Sciences, Chernogolovka, Moscow oblast, 142432 Russia email: bezmen@iem.ac.ru Received November 20,...2002), Orlovka deposit (Badanina et al., 2010), and Etyka deposit (Beskin et al., 1994). The origin of raremetal...solubility of minerals containing rare metals (columbite, tantalite, zircon, hafnon, etc.) in fluidbearing...with the sol ubility of their minerals (columbite, tantalite, hafnon, and zircon) in Li–F granite systems...21 wt % Nb2O5 were obtained in experiments on columbite sol ubility in Li–F granites with an agpaitic | | Akinfiev, Nikolay N., Korzhinskaya, Valentina S., Kotova, Natalia P., Redkin, Alexander F., Zotov, Alexander V. (2020) Niobium and tantalum in hydrothermal fluids: Thermodynamic description of hydroxide and hydroxofluoride complexes. Geochimica et Cosmochimica Acta, 280. 102-115 doi:10.1016/j.gca.2020.04.009 | Journal (article/letter/editorial) | Sciences, Staromonetny per. 35, Moscow 119017 Russia 8 b 9 Russia Institute of Geology of Ore Deposits,... 10 c 11 4, Chernogolovka, Moscow district, 142432 Russia 12 Abstract 13 Available experimental...minerals with a more complex composition (columbite, tantalite, 67 pyrochlores) have usually lower solubilities...formation of Nb–Ta 404 mineralization. 405 Columbite-tantalite usually accompanies the formation of leucogranites...these metals. At the post magmatic 409 stage, columbite and other tantaloniobates in Li-F granites may | | | Book | Ploskaya Mountain, Western Keivy, Kola Peninsula, Russia. Photo: Natalia A. Pekova, 1996. From archives...Ostrooumov et al. [47] at multiple amazonite deposits in Russia and other countries, the analysis of a multitude...University in St Petersburg, Ilmen Nature Reserve (Russia), Mainz University (Germany), University of Nantes...considered. The list of amazonite discovery regions (in Russia and in other countries) includes more than 200...naturalists from a range of deposits in Europe and Russia served as the material basis for the first quantitative | | Badanina, E. V., Syritso, L. F., Volkova, E. V., Thomas, R., Trumbull, R. B. (2010) Composition of Li-F granite melt and its evolution during the formation of the ore-bearing Orlovka massif in Eastern Transbaikalia. Petrology, 18 (2) 131-157 doi:10.1134/s0869591110020037 | Journal (article/letter/editorial) | Universitetskaya nab. 7/9, St. Petersburg, 199034 Russia; email: elena_badanina@mail.ru b German Research...rocks with Li micas and Ta mineralization (columbite–tantalite and microlite) were produced, and the melt...fractionation of Li–F micas, albite, topaz, colum bite–tantalite, and microlite, which resulted in that the quartz...the coexisting fluid indicated the presence of columbite, which implies a Ta content in the fluid of approximately...performed U–Pb zircon dating (SHRIMP II, Karpinskii AllRussia Research Institute of Geology) and provided unequivocal | | Dolgopolova, Alla, Seltmann, Reimar, Kober, Bernd, Weiss, Dominik, Stanley, Chris, Dulski, Peter (2004) Geochemical characteristics and lead isotope systematics of highly fractionated Li–F-enriched amazonite granites and related host rocks of the Orlovka–Spokoinoe mining district, Eastern Transbaikalia (Russia) Applied Earth Science, 113 (1) 83-99 doi:10.1179/037174504225004420 | Journal (article/letter/editorial) | of the Orlovka–Spokoinoe mining district, Eastern Transbaikalia (Russia) Alla Dolgopolova, Reimar Seltmann...in the Orlovka–Spokoinoe mining district, Eastern Transbaikalia, Russia. The aim of the paper is to characterise...Geodynamic-tectonic position The Orlovka–Spokoinoe mining district belongs to the Central Asian Orogenic Belt (CAOB)15...by finely disseminated (0·01–1 mm) tantalite, tantalite–columbite, microlite and pyrochlore accumulated...vol%), microlite (< 10 up to 150 ppm), and columbite–tantalite (60 to 150–800 ppm). The Ta/Nb ratio in the | | Seltmann, R., Soloviev, S., Shatov, V., Pirajno, F., Naumov, E., Cherkasov, S. (2010) Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits*. Australian Journal of Earth Sciences, 57 (6) 655-706 doi:10.1080/08120099.2010.505277 | Journal (article/letter/editorial) | (VSEGEI), 74 Sredny Prospect, St Petersburg, 199106, Russia d Geological Survey of Western Australia, 100...Prospekt Akademik Koptyuga, Novosibirsk, 630090, Russia f Vernadsky State Geological Museum, Russian Academy...Sciences, 11-2 Mokhovaya str., Moscow, 125009, Russia Version of record first published: 11 Aug 2010...(VSEGEI), 74 Sredny Prospect, St Petersburg 199106, Russia. 4 Geological Survey of Western Australia, 100...Prospekt Akademik Koptyuga, Novosibirsk 630090, Russia. 6 Vernadsky State Geological Museum, Russian Academy | | Soloviev, Serguei G., Kryazhev, Sergey, Dvurechenskaya, Svetlana (2020) Geology, igneous geochemistry, mineralization, and fluid inclusion characteristics of the Kougarok tin-tantalum-lithium prospect, Seward Peninsula, Alaska, USA. Mineralium Deposita, 55 (1) 79-106 doi:10.1007/s00126-019-00883-7 | Journal (article/letter/editorial) | and columbite-tantalite with a higher Nb content. Some Ta-Nb minerals, such as columbite-tantalite with...granite . Zinnwaldite . Topaz . Greisen . Columbite-tantalite . Cassiterite . Fluid inclusions Editorial...of Sciences, 35 Staromonetny Per, Moscow 109017, Russia 2 Central Research Institute of Geological Prospecting...(TsNIGRI), 1-129 Warshawskoe Chaussee, Moscow 117545, Russia Introduction The Kougarok prospect in Alaska is...and/or Li and comprise the Orlovka and Etyka deposits in Russia (Reyf et al. 2000), Beauvoir in France | | | Journal (article/letter/editorial) | Geochemistry, Russian Academy of Sciences, Moscow, 119017 Russia *e-mail: akimolan@igem.ru **e-mail: vlad243@igem...Southeastern Transbaikalia, an important mining region in Russia, are discussed. The zoned or beltlike distribution...Khangilai (Orlovskoe deposit), Bukuka, Belukha, Etyka, and GEOLOGY OF ORE DEPOSITS Vol. 62 No. 1 2020... 4 108q gga V I Tr a n s b a i k 52q n Russia Qiqihar 116q 120q 2 3 4 7 8 9 124q 5...orefield) and rare metal ((1) Sherlovaya Gora; (2) Etyka; (3) Orlovskoe; and (4) Shumilovskoe) deposits and | | Syritso, L. F., Badanina, E. V., Abushkevich, V. S., Volkova, E. V., Shuklina, E. V. (2012) Volcanoplutonic association of felsic rocks in the rare-metal ore units of Transbaikalia: Geochemistry of rocks and melts, age, and P-T conditions of their crystallization. Petrology, 20 (6) 567-592 doi:10.1134/s0869591112060057 | Journal (article/letter/editorial) | Universitetskaya nab. 7/9, St. Petersburg, 199034 Russia email: Liudmila_Syritso@mail.ru; laboratory_mgre@mail...Sciences, nab. Makarova 2, St. Petersburg, 199034 Russia email: vik2211@mail.ru Received September 20,...schemes of ore units Bukuka (Malinovsky, 1965), Etyka (Beskin et al., 1994), Sherlovaya Gora (Antipin... Geological scheme of the Sherlovaya Gora ore district (modified after V.S. Antipin et al. (1980). (1)...are represented by zircon, monazite, apatite, columbite, cassiterite, and fluorite. Unlike the Sher lovaya | | Breiter, Karel, Badanina, Elena, Ďurišová, Jana, Dosbaba, Marek, Syritso, Liudmila (2019) Chemistry of quartz – A new insight into the origin of the Orlovka Ta-Li deposit, Eastern Transbaikalia, Russia. Lithos, 348. 105206 doi:10.1016/j.lithos.2019.105206 | Journal (article/letter/editorial) | the Orlovka Ta-Li deposit, Eastern Transbaikalia, Russia Karel Breiter, Elena Badanina, Jana Ďurišová,...the Orlovka Ta-Li deposit, Eastern Transbaikalia, Russia, LITHOS(2019), https://doi.org/10.1016/j.lithos...the Orlovka Ta-Li deposit, Eastern Transbaikalia, Russia Karel Breiter1( corresponding author, breiter@gli...University emb. 7–9, St.- pr Petersburg, 199034 Russia Pr e- 3. Tescan Company, Libušina třída 21,...Ta-Li deposit of Orlovka in Eastern Transbaikalia, Russia, is one of the best known rare- Jo u metal deposits | | | Book (volume) | Eastern Transbaikalia Belaya Gora, Lower Khabarovsk Krai Berezovo, Eastern Blagodatnensk, Bodaibo Amur...Chorukh-Dairon, Obl. Tadzhikistan Eastern Asia Karamken, Krai Khabarovsk ca 4040/7030 6020/15100 Kavalerovo...Khakandzha, Khabarovsk 6108/14143 Krai Khingan, Khabarovsk 4810/13050 Krai Khabarovsk 6119/14911 4025/6942...4025/6942 4810/13050 Krai Buryat Kitelya, Northern region Kiyalykh-Uzen', 5030/10320 ASSR Ladoga...Eastern 5847/5923 Kochkar, Derbeke-Nel'gekha, Etyka, Urals 5140/11400 Transbaikalia Buryat Middle | | | Journal (issue) | concentration in rare-element granites and pegmatites from Russia………………………………………………………………..4 BARROS, R., MENUGE...the South Sangilen pegmatite belt, Tyva Republic, Russia…………………………………………………………………………………..68 LIMA, A., DIAS...ScNbO4: Products of Ca-metasomatism of Sc-enriched columbite-(Mn) from NYF pegmatite Kožichovice II, Czech...concentration in rare-element granites and pegmatites from Russia Elena Badanina 1, Liudmila Syritso1 1 Department...Geochemistry, St.-Petersburg State University, Russia, e.badanina@spbu.ru Keywords: Pegmatites, rare | | | Journal (article/letter/editorial) | (niobiumtantalum, mainly in the form of columbite-tantalite, or beryllium, mainly in the form of beryl)...with deposits of the tin-tungsten associ ation (Etyka, Spokoyniy). The granitoids of the second series | | Sánchez-Muñoz, Luis, Müller, Axel, Andrés, Sol López, Martin, Robert F., Modreski, Peter J., de Moura, Odulio J.M. (2017) The P–Fe diagram for K-feldspars: A preliminary approach in the discrimination of pegmatites. Lithos, 272. 116-127 doi:10.1016/j.lithos.2016.10.030 | Journal (article/letter/editorial) | geologist mapping uncharted territory in a pegmatite district. Our aim in this research is to test whether the...North American examples, as in the Pikes Peak district of Colorado (Simmons et al., 1980, 1987) and the...102 ppm. Sample Et1317 from East Transbaikalia (Russia) is an exception, RI and extensive recrystallization...Vinogradov Institute of D Geochemistry (Irkutsk, Russia) for samples ZAG and Et1317. We are grateful to...Neoproterozoic overprinting of the cassiterite and columbite–tantalite bearing pegmatites of the Gatumba area, Rwanda |
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