Abstract
The paper discusses the chemical composition and parageneses of fluorides and fluorcarbonates in rocks of the Katugin Complex, with which a unique deposit of REE–Nb–Ta ore with cryolite is associated. In mineralogy and chemical composition, the rocks correspond to biotite, biotite–amphibole, arfvedsonite, and aegirine–arfvedsonite granites, which were regarded in earlier publications as granite-like metasomatic rocks. Aegirine–arfvedsonite granite contains a cryolite–gagarinite assemblage, which reflects depletion of Ca in the mineral-forming medium and enrichment in Na and F. Arfvedsonite granite is characterized by intergrowth of yttrofluorite with fluocerite and gagarinite, which indicates a relative enrichment in Ca and low CO2 content. Biotite granite is characterized by an assemblage of fluorite with titanite, apatite, and monazite as evidence for an elevated Ca concentration along with moderate F and P contents in the system. Neighborite, coulsellite, gagarinite, fluocerite, and tveitite-(Y) appear in biotite–amphibole granite along with replacement of annite with riebeckite and development of albite after microcline. All this indicates that a moderately alkaline Na-fluoride solution with a low Ca concentration affects biotite granite.
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Antipin, V.S., Savina, E.A., and Mitichkin, M.A., Geochemistry and formation conditions of rare-metal granites with various fluorine-bearing minerals (fluorite, topaz, and cryolite), Geochem. Int., 2006, no. 10, pp. 965–976.
Arkhangelskaya, V.V., About the structure of solid solution decomposition in natural REE-bearing fluorite, Dokl. Akad. Nauk SSSR, 1970, vol. 195, no. 6, pp. 1411–1414.
Arkhangelskaya, V.V., Kazanskiy, V.I., Prokhorov, K.V., and Sobachenko, V.N., Geological structure, conditions of formation, and zoning of the Katugin Ta–Nb–Zr deposit (Chara–Udokan region, eastern Siberia), Geol. Rudn. Mestorozhd., 1993, vol. 35, no. 2, pp. 115–131.
Arkhangelskaya, V.V., Ryabtsev, V.V., and Shuriga, T.N., Geology and mineralogy of Russian Ta deposits, Mineral. Syr’e, 2012, vol. 25.
Bevan, D.J.M., Strahle, J., and Greis, O., The crystal structure of tveitite, an ordered yttrofluorite mineral, J. Solid State Chem., 1982, vol. 44, pp. 75–81.
Bykov, Y. and Arkhangelskaya, V.V., The Katugin rare metal deposit, in Mestorozhdeniya Zabaikal’ya (Deposits of Transbaikalia), Moscow: Geoinformmark, 1995, vol. 1, pp. 76–86.
Dolejs, D. and Baker, D.R., Thermodynamic analysis of the system Na2O–K2O–CaO–Al2O3–SiO2–H2O–F2O–1: stability of fluorine-bearing minerals in felsic igneous suites, Contrib. Mineral. Petrol., 2004, vol. 146, pp. 762–778.
Ginzburg, A.I., Arkhangelskaya, V.V., and Shatskaya, V.V., Feldspar metasomatites as a new genetic type of mineral deposits, Razv. Okhr. Nedr, 1973, no. 1, pp. 11–17.
Goodenough, K.M., Upton, B.G.J., and Ellam, R.M., Geochemical evolution of the Ivigtut granite, south Greenland: a fluorine-rich “A-type” intrusion, Lithos, 2000, vol. 51, pp. 205–221.
Gramenitskiy, Ye.N., Shchukina, T.I., and Devyatova, V.R., Fazovye otnosheniya vo ftor-soderzhashchei granitnoi i nefelin–sienitovoi sistemakh in raspredelenine elementov mezhdu fazami (The Phase Relations in the Fluorine-Containing Granite and Nepheline Syenite Systems and the Distribution of Elements between the Phases), Moscow: GEOS, 2005.
Gysi, A.P. and Williams-Jones, A.E., The thermodynamic properties of bastnäsite-(Ce) and parisite-(Ce), Chem. Geol., 2015, vol. 392, pp. 87–101.
Kotov, A.B., Vladykin, N.V., Larin, A.M., Gladkochub, D.P., Salnikova, E.B., Sklyarov, E.V., Tolmacheva, E.V., Donskaya, T.V., Velikoslavinsky, S.D., and Yakovlev, S.Z., New data on the age of ore formation in the unique Katugin raremetal deposit (Aldan Shield), Dokl. Earth Sci., 2015, vol. 463, no. 1, pp. 663–667.
Larin, A.M. Kotov, A.B., Sal’nikova, E.B., Kovalenko, V.I., Kovach, V.P., Yakovleva S.Z., Berezhnaya, N.G., and Ivanov, V.E., Age of the Katugin Ta–Nb deposit, Aldan–stanovoi shield: evidence for the identification of the global rare metal metallogenic epoch, Dokl. Earth Sci, 2002, vol. 383A, no. 3, pp. 336–340.
Larin, A.M., Kotov, A.B., Velikoslavinskii, S.D., Sal’nikova, E.B., and Kovach, V.P., Early precambrian Agranitoids in the Aldan Shield and adjacent mobile belts: sources and geodynamic environments, Petrology, 2012, vol. 20, no. 3, pp. 218–240.
Lenharo, S.L.R., Pollard, P.J., and Born, H., Petrology and textural evolution of granites associated with tin and raremetals mineralization at the Pitinga Mine, Amazonas, Brazil, Lithos, 2003, vol. 66, pp. 37–61.
Levashova, E.V., Skublov, S.G., Marin, Yu.A., Lupashko, T.N., and Ilchenko, E.A., Trace elements in zircon from rocks of Katugin rare metal deposit, Zap. Ross. Mineral. O-va, 2014, no. 5, pp. 17–31.
Mitchell, R.H. and Kjarsgaard, B.A., Experimental studies of the system Na2CO3—CaCO3—MgF2 at 0.1 GPa: implications for the differentiation and low-temperature crystallization of natrocarbonatite, J. Petrol., 2011, vol. 52, nos. 7–8, pp. 1265–1280.
Osokin, E.D., Altukhov, E.N., and Kravchenko, S.M., Criteria and formation and localization conditions of giant rare element deposits, Geol. Ore Deposits, 2000, vol. 42, no. 4, pp. 351–358.
Pekov, I.V., Chukanov, N.V., Kononkova, N.N., Yakubovich, O.V., Massa, W., and Voloshin, A.V., Tveitite-(Y) and rare-earth enriched fluorite from amazonite pegmatites of western Keivy, Kola Peninsula, Russia. Genetic crystalchemistry of natural Ca,REE-fluorides, Zap. Ross. Mineral. O-va, 2008, no. 3, pp. 76–93.
Peretyazhko, I.S. and Savina, E.A., Fluid and magmatic processes in the formation of the Ary-Bulak ongonite massif (eastern Transbaikalia), Russ. Geol. Geophys., 2010, vol. 51, no. 10, pp. 1110–1125.
Prokhorov, K.V. and Sobachenko, V.N., Structural, petrological and geochemical conditions of the formation of orebearing high-temperature sodium metasomatites, in Vnutrennee stroenine rudonosnykh dokembriiskikh razlomov (The Internal Structure of the Precambrian Ore-Bearing Faults), Moscow: Nauka, 1985, pp. 94–121.
Ryabenko, S.V., Feldspar metasomatites as a new source of rare earth elements, Razv. Okhr. Nedr, 1983, no. 12, pp. 11–14.
Shchekina, T.I., Gramenitskiy, E.N., and Alferyeva, Ya.O., Leucocratic magmatic melts with the maximum fluorine concentrations: experiment and relations in nature, Petrology, 2013, vol. 21, no. 3, pp. 454–470.
Williams-Jones, A.E. and Wood, S.A., A preliminary petrogenetic grid for REE fluorocarbonates and associated minerals, Geochim. Cosmochim. Acta, 1992, vol. 56, pp. 725–738.
Zaraysky, G.P. and Zyryanov, V.N., Experimental study of the alkali metasomatism of granites, Fazovye ravnovesiya i protsessy mineraloobrazovaniya (Phase Equilibria and Processes of Mineral Formation), Moscow: Nauka, 1973. P. 119–156.
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Original Russian Text © V.B. Savel’eva, E.P. Bazarova, E.A. Khromova, S.V. Kanakin, 2016, published in Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 2016, No. 2, pp. 1–19.
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Savel’eva, V.B., Bazarova, E.P., Khromova, E.A. et al. Fluorides and Fluorcarbonates in Rocks of the Katugin Complex, Eastern Siberia: Indicators of Geochemical Mineral Formation Conditions. Geol. Ore Deposits 59, 561–574 (2017). https://doi.org/10.1134/S1075701517070108
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DOI: https://doi.org/10.1134/S1075701517070108