Abstract
Fine-grained segregations up to 5 mm in size composed of graphic intergrowths of zircon, quartz, calcite and containing up to 0.8 wt % SrO have been found in albite–riebeckite and dolomite–biotite metasomatic rocks formed after alaskite granite. They contain magnetite, titanomagnetite (25.4 wt % TiO2), cerite-(Ce,Nd), rutile (up to 1.2 wt % Nb2O5), as well as rare micrograins of monazite-(Ce), bastnaesite-(Ce), and barite (up to 5.7 wt % SrO). The fine-grained structure of mineral aggregates suggests a metacolloidal nature. It is assumed that the zircon–quartz–calcite assemblage was formed due to exchange decomposition reaction between the salt phase of hydrothermal solution with predominant Na2CO3, elevated Zr and, to a lesser extent, Fe, Ti, LREE, Nb contents and dissolved calcium and silica compounds of a Na2SiO3 type.
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References
Belov, V.V. and Raudonis, P.A., Formation of U-bearing apatites and their relationships with dikes, Geol. Ore Deposits, 1983, vol. 25, no. 2, pp. 98–103.
Betekhtin, A.G., Ore formation in hydrothermal vein deposits, in Osnovnye problemy v uchenii o magmatogennykh rudnykh mestorozhdeniyakh (Main Problems in Science on Magma-Derived Ore Deposits), Moscow: AN SSSR, 1955, pp. 279–311.
Bibikova, E.V., Korikovsky, S.P., Sez’ko, A.I., and Fedorovsky, V.S., Age of granitic Primorsky Complex (western Baikal region) from data of U–Pb method, Dokl. Akad. Nauk SSSR, 1981, vol. 257, no. 2, pp. 462–466.
Borisenko, A.S., Borovikov, A.A., Zhitova, L.M., and Pavlova, G.G., Composition of mafmatogene fluids and factors of their geochemical and metal-bearing capasity, Russian Geol. Geophys., 2006, vol. 47, no. 12, pp. 1282–1300.
Borisenko, A.S., Borovikov, A.A., Vasyukova, E.A., Pavlova, G.G., Ragozin, A.L., Prokop’ev, I.L., and Vladykin, N.V., Oxidized magmatogene fliuds: metal-bearing capacity and role in ore formation, Russian Geol. Geophys., 2011, vol. 52, no. 1, pp. 144–164.
Donskaya, T.V., Bibikova, E.V., Mazukabzov, A.M., Kozakov, I.K., Gladkochub, D.P., Kirnozova, T.I., Plotkina, Yu.V., and Reznitsky, L.Z., The Primorsky Granitoid Complex of Western Cisbaikalia: geochronology and geodynamic typification, Russian Geol. Geophys., 2013, vol. 44, no. 10, pp. 968–979.
Droop, G.T.R., A general equation for estimating Fe3+ concentrations in ferromagnesian silicates and oxides from microprobe analyses, using stoichiometric criteria, Mineral. Mag., 1987, vol. 51, no. 3, pp. 431–435.
Fleisher, M., Glossary of Mineral Species, 5th Ed., Tucson: The Mineralogical Record, Inc., 1987; Moscow: Mir, 1990.
Leake, B.E., Woolley, A.R., and Arps, C.E.S., et al. Nomenclature of amphiboles: Nomenclature of amphiboles: Report of Subcommittee on Amphiboles of the International Mineralogical Assotiation, Commission on New Minerals and Mineral Names, Can. Mineral., 1997, vol. 35, pp. 219–246.
Letnikov, F.A., Fluids in endogenic processes and problems of metallogeny, Russian Geol. Geophys., 2006, vol. 47, no. 12, pp. 1271–1281.
Marakushev, A.A., Gramenitsky, E.N., and Korotaev, M.Yu., A petrological model of endogenic ore formation endogennogo rudoobrazovaniya, Geol. Ore Deposits, 1983, vol. 25 no. 1, pp. 3–20.
Marakushev, A.A., Shapovalov, Yu.B., Gramenitsky, E.N., and Shchekina, T.I., Experimental modeling of ore-generating capability of granitic systems, in Eksperimental’noe i teoreticheskoe modelirovanie protsessov mineraloobrazovaniya (Experimental and Theoretical Simulation of Mineral Formation), Moscow: Nauka, 1998, pp. 104–118.
Metasomatizm i metasomaticheskie porody (Metasomatism and Metasomatic Rocks) Zharikov, V.A and Rusinov, V.L, Eds., Leningrad: Nauchnyi Mir, 1998.
Omelyanenko, B.I., Okolorudnye gidrotermal’nye izmeneniya porod (Wall-Rock Hydrothermal Alteration of Rocks), Moscow: Nedra, 1978.
Reyf, F.G. and Ishkov, Yu.M., Immiscible phases of heterogeneous magmatic fluid, their ore specialization, and separate migration during formation of the Yermakovka F–Be deposit, Dokl. Earth Sci., 2003, vol. 390, no. 4, pp. 577–579.
Semenov, E.I. and Raudonis, P.A., Unusual zircon without Hafnium, Dokl. Akad. Nauk, 1995, vol. 342, no. 4, pp. 517–518.
Shmuraeva, L.Ya., Prirazlomnye karbonatno-shchelochnye metasomatity dokembriya, ikh rudonosnost' i genezis (Precambrian Fault-Line Carbonate–Alkaline Metasomatic Rocks, Their Ore Potential and Genesis), Vladivostok: Dal’nauka, 1995.
Suk, N.I., Experimental study of liquid immiscibility in silicate–carbonate systems, Petrology, 2001, vol. 9, no. 5, pp. 477–488.
Tappe, S., Foley, S.F., Jenner, G.A., et al., Genesis of ultramafic lamprophyres and carbonatites at Aillik Bay, Labrador: A consequence of incipient lithospheric thinning beneath the North Atlantic Craton, J. Petrol., 2006, vol. 47, no. 7, pp. 1261–1315.
Tyuleneva, V.M., Kurabtov, A.V., and Samgine-Dolzhansky, I.S., Mineral assemblages, composition, and formation stages of uranium mineralization in the Dorozhny area, Akitkan District, in Materialy po geologii mestorozhdenii urana, redkikh i redkozemel’nykh metallov (Proceedings on Geology of Uranium, Rare and Rare-Earth Deposits), Moscow: VIMS, 2010, issue 155, pp. 175–190.
Zaraisky, G.P., Zonal’nost’ i usloviya obrazovaniya metasomaticheskikh porod (Zoning and Formation Conditions of Metasomatic Rocks), Moscow: Nauka, 1989.
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Original Russian Text © V.B. Savelyeva, E.P. Bazarova, V.V. Sharygin, N.S. Karmanov, 2014, published in Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 2014, No. 5, pp. 1–16.
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Savelyeva, V.B., Bazarova, E.P., Sharygin, V.V. et al. Zircon–quartz–calcite segregations in carbonate–alkaline metasomatic rocks of the western Baikal region and their petrogenetic implications. Geol. Ore Deposits 57, 645–656 (2015). https://doi.org/10.1134/S1075701515080097
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DOI: https://doi.org/10.1134/S1075701515080097