Skip to main content
SpringerLink
Log in

Experimental study of liquid immiscibility in the fluid-magmatic silicate systems containing Ti, Nb, Sr, REE, and Zr

  • Published:
Petrology Aims and scope Submit manuscript

Abstract

Aluminosilicate alkaline systems containing Ti, REE (La, Ce), Y, Sr, and Nb were studied experimentally at T = 1200 and 1250°C and P = 2 kbar in the presence of aqueous and alkaline fluid. In the fluid-absent experiments with systems containing the same elements, loparite crystals in a silicate matrix were obtained. These systems in the presence of aqueous and alkaline fluid pressure conditions demonstrate an immiscible splitting into two liquids: (1) aluminosilicate matrix and (2) droplets enriched in Ti, REE (La, Ce), Y, Sr, and Nb, which contain silicate admixture and are compositionally close to loparites. According to approximate estimates, the partition coefficients between the melts of the droplets and aluminosilicate matrix (K = C dr/C sil) are more than 5 for TiO2, < 0.35 for SiO2, 10–20 for Nb2O5, > 15 for REE, and from 2.3 to 7.6 for SrO. Obtained unmixing may be of great significance for explaining the genesis of REE-Nb (loparite) deposits. In addition, the experiments demonstrate that Zr may be accumulated together with Ti and REE due to liquid immiscibility of this type. The partition coefficient of ZrO2 between the melts of droplets and aluminosilicate matrix (K = C dr/C sil) according to approximate estimates varies from ∼ 3.5 to 9.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Chevychelov, V.Yu., Borodulin, G.P., and Zaraisky, G.P., Solubility of Columbite, (Mn,Fe)(Nb,Ta)2O6, in Granitoid and Alkaline Melts at 650–850°C and 30–400 MPa: An Experimental Investigation, Geochem. Int., 2010, vol. 48, pp. 456–464.

    Article  Google Scholar 

  • Galakhov, F.Ya. and Varshal, B.G., Causes of Phase Separation in Simple Silicate Systems, in Likvatsionnye yavleniya v steklakh (Phenomenon of Liquid Immiscibility in Glasses), Leningrad: Nauka, Leningradskoe otd, 1969.

    Google Scholar 

  • Gerasimovskii, V.I., Volkov, V.P., Kogarko, L.N., Polyakov, A.I., Saprykina, T.V., and Balashov, Yu.A., Geokhimiya Lovozerskogo shchelochnogo massiva (Geochemistry of the Lovozero Alkaline Massif), Moscow: Nauka, 1966.

    Google Scholar 

  • Greig, I.W., Immiscibility in Silicate Melts, Am. J. Sci., 1927, vol. 13, pp. 1–44.

    Article  Google Scholar 

  • Grigor’ev, D.P. and Iskyul’, E.V., Differentiation of Some Silicate Melts as Results of Formation of Two Immiscible Liquids, Izv. Akad. Nauk SSSR, Ser. Geol., 1937, no. 1, pp. 77–107.

  • Kalugin V.M. Role of Liquid Immiscibility during Crystallization of Natural and Technogenic Aluminosilicate Melts, Cand. Sci. (Geol-Min) Dissertation, Novosibirsk: Joint Inst. Geol. Geokhim Mineral. Sib. Otd. Ross. Akad. Nauk, 2002, p. 24.

    Google Scholar 

  • Kogarko, L.N., Problemy genezisa agpaitovykh magm (Problems of Genesis of Agpaitic Magmas), Moscow: Nauka, 1977.

    Google Scholar 

  • Kogarko, L.N., Problem of Genesis of Giant Rare-Metal Deposits of the Kola Peninsula, in Rossiiskaya Arktika: geologicheskaya istoriya, minerageniya, geoekologiya (Russian Arctic: Geological History, Metallogeny, and Geoecology), St. Petersburg: VNIIOkeanologiya, 2002, pp. 773–787.

    Google Scholar 

  • Letnikov, F.A., Karpov, I.K., Kiselev, A.I., and Shkandrii, B.O., Flyuidnyi rezhim zemnoi kory i verkhnei mantii (Fluid Regime of the Earth’s Crust and Upper Mantle), Moscow: Nauka, 1977.

    Google Scholar 

  • Linnen, R.L. and Keppler, H., Columbite Solubility in Granitic Melt: Consequences for the Enrichment and Fractionation of Nb and Ta in the Earth’s Crust, Contrib. Mineral. Petrol., 1997, vol. 128, pp. 213–227.

    Article  Google Scholar 

  • Marakushev, A.A., Gramenitskii, E.N., and Korotaev, M.Yu., Petrological Model of Endogenous Ore Formation, Geol. Rudn. Mestorozhd., 1983, no. 1, pp. 3–20.

  • Roedder, E., Silicate Liquid Immiscibility, in The Evolution of Igneous Rocks: Fiftieth Anniversary Perspectives, Yoder, H.S., Ed., Princeton: Princeton Univ. Press, 1979, pp. 15–57.

    Google Scholar 

  • Roedder, E., Low Temperature Liquid Immiscibility in the System K2O-FeO-Al2O3-SiO2, Am. Mineral., 1951, vol. 36, pp. 282–286.

    Google Scholar 

  • Suk, N.I., Liquid Immiscibility in Simple Silicate Systems (Experiment), in Abstracts of 12th International Conference on Experimental Mineralogy, Petrology, and Geochemistry, Conference Series, Habitzel, K., Mark, T.D., and Prock, S., Innsbruck: University Press, 2008, p. 104.

    Google Scholar 

  • Suk, N.I., Phenomena of Fluid-Magmatic Differentiation in Alkaline Melts Containing Ore Metals, in Shchelochnoi magmatizm Zemli i ego rudonosnost’. Mezhdunarodnoe (stran SNG) soveshchanie, Donetsk, 2007 (Alkaline Magmatism of the Earth and its Ore Potential. International (CIS) Conference, Donetsk, 2007), Kiev: Nauchnoe izdanie, 2007c, pp. 221–225.

    Google Scholar 

  • Suk, N.I., Phenomena of Liquid Immiscibility in Simple Silicate Systems (Experiment), Elektron. nauch.-inform. zhurnal “Vestnik Otdeleniya nauk o Zemle RAN”, 2007a, no. 1. (25). http://www.scgis.ru/russian/cp1251/h-dgggms/1-2007/informbul1-2007/term35.pdf http://www.scgis.ru/russian/cp1251/h-dgggms/1-2007/informbul1-2007/term35e.pdf

  • Suk, N.I., Experimental Study of Alkaline Magmatic Aluminosilicate Systems: Implication for the Genesis of REE-Nb Loparite Deposits, Dokl. Earth Sci., 2007b, vol. 414, no. 4, pp. 615–618.

    Article  Google Scholar 

  • Suk, N.I., Drop Liquid Immiscibility in Alkaline Aluminosilicate Systems Bearing Ore Metals, in Materialy XXV Vserossiiskogo seminara (s uchastiem stran SNG) “Geokhimiya magmaticheskikh porod” i shkoly “Shchelochnoi magmatizm Zemli”, Sankt-Petersburg, 2008 (Proceedings of 25th All-Russian (with CIS Participation) “Geochemistry of Magmatic Rocks and School Alkaline Magmatism of the Earth,”) Sankt-Petersburg-Moscow: 2008, pp. 153–154.

  • Suk, N.I., Experimental Study of Liquid Immiscibility in Fluid-Magmatism Systems and Relations with Genesis of Rare Earth-Niobium Deposits, in Tez. dokl. XVI Rossiiskoe soveshchanie po eksperimental’noi mineralogii (Abstracts of 16th Russian Conference on Experimental Mineralogy), Chernogolovka, 2010, pp. 71–73.

  • Varshal, B.G., Chemical Aspects of Liquid Immiscibility in Silicate and Aluminosilicate Melts, in Issledovaniya struktury magmaticheskikh rasplavov (Structural Studies of Magmatic Melts), Sverdlovsk: UNTs AN SSSR, 1981, pp. 41–51.

    Google Scholar 

  • Veksler, I.V., Kogarko, L.N., and Krigman, L.D., Phase Equilibria in the Loparite-Nepheline System, Geokhimiya, 1983, no. 8, pp. 1203–1208.

  • Veksler, I.V., Kogarko, L.N., and Senin, V.G., Composition of Equilibrium Phases in the Loparite-Nepheline System, Geokhimiya, 1985, no. 5, pp. 599–607.

  • Veksler, I.V., Kogarko, L.N., Krigman, L.D., and Senin, V.G., Crystallization of Loparite from Lujavrite Melt under Dry and Water-Saturated Conditions, Geokhimiya, 1989, no. 2, pp. 181–191.

  • Vlasov, K.A., Kuz’menko, M.V., and Es’kova, E.M., Lovozerskii shchelochnoi massiv (Lovozero Alkaline Massif), Moscow: AN SSSR, 1959.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    N. I. Suk

Authors
  1. N. I. Suk
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to N. I. Suk.

Additional information

Original Russian Text © N.I. Suk, 2012, published in Petrologiya, 2012, Vol. 20, No. 2, pp. 156–165.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Suk, N.I. Experimental study of liquid immiscibility in the fluid-magmatic silicate systems containing Ti, Nb, Sr, REE, and Zr. Petrology 20, 138–146 (2012). https://doi.org/10.1134/S0869591112020075

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S0869591112020075

Keywords

Search

Navigation