Doklady Earth Sciences

, Volume 446, Issue 1, pp 1054–1058 | Cite as

The age of Kondyor massif dunites (Aldan Province, Russia): First U-Pb isotopic data

  • K. N. MalitchEmail author
  • A. A. Efimov
  • I. Yu. Badanina


The material and isotope-geochemical peculiarities of zircons from dunites of the Kondyor massif (Aldan Province, Southeast Siberian Craton) have been described for the first time. This massif is associated with an economic platinum placer deposit. On the basis of detailed study of the morphology, internal structure, and geochemical characteristics, zircons have been subdivided into two types. The first type is represented by crystals of oval and rounded shapes, characterized by a bimodal distribution of “ancient” (2477 ± 18 and 1885 ± 52 Ma) U-Pb (SHRIMP-II) ages. The second type of zircons forms idiomorphic crystals and aggregates of prismatic habitus, forming two “young” age clusters (176 ± 1.2 and 143 ± 2.0 Ma). The obtained results allow us to make a conclusion about the long evolution of platinum-bearing dunites. The first type of zircons formed by metamictic cores and homogeneous peripheral rims indicates the time of metamorphism at the Archean-Proterozoic boundary (∼2.5 Ga), implying an older age of porous zircon cores. Such zircons characterize the minimal age of the initial mantle substance or a close time when the platinum-bearing dunite was generated. Based on their formation time, the second type of zircons can be referred to the epoch of tectonic-magmatic activation of the Aldan Shield. The new geochronological data, along with the material identity of dunites from the Urals and the Aldan Province, argue for a common genetic origin of platinum-bearing dunites of the fold belts and ancient cratons.


Zircon 206Pb DOKLADY Earth Science Siberian Craton Isochron 
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  1. 1.
    Geologic Structure of the Soviet Union and Regularities of Mineral Resources Evolution, vol. 4: Siberian Craton, Ed. by N.S. Malitch, V.L. Masaitis, and V.S. Surkov (Nedra, Leningrad, 1987) [in Russian].Google Scholar
  2. 2.
    V. G. Gurovich, V. N. Zemlyanukhin, E. P. Emel’yanenko, et al., Geology, Petrology and Ore-bearing Potential of the Kondyor Massif (Nauka, Moscow, 1994) [in Russian].Google Scholar
  3. 3.
    A. A. Efimov and I. F. Tavrin, Dokl. Akad. Nauk SSSR 243, 991–994 (1978).Google Scholar
  4. 4.
    A. A. El’yanov and V. M. Moralev, Dokl. Akad. Nauk SSSR 141, 687–689 (1961).Google Scholar
  5. 5.
    K. S. Karetnikov, Tikhookean. Geol. 24(4), 76–83 (2005).Google Scholar
  6. 6.
    K. N. Malitch, Platinum-group elements in Clinopyroxenite-dunite Massifs of the East Siberia: Geochemistry, Mineralogy, and Genesis (SPb. kartograf. fabrika VSEGEI, St. Petersburg, 1999) [in Russian].Google Scholar
  7. 7.
    K. N. Malitch, A. A. Efimov, and Yu. L. Ronkin, Dokl. Earth Sci. 427, 851–855 (2009).CrossRefGoogle Scholar
  8. 8.
    M. P. Orlova, O. I. Avdeeva, I. V. Fedorova, and L. V. Yakovleva, Dokl. Akad. Nauk 240, 677–680 (1978).Google Scholar
  9. 9.
    Yu. D. Pushkarev, A. I. Kostoyanov, M. P. Orlova, and E. S. Bogomolov, Reg. Geol. Metallog., No. 16, 80–91 (2002).Google Scholar
  10. 10.
    I. S. Rozhkov, V. I. Kitsul, L. V. Razin, and S. S. Borishanskaya, Platinum Deposits of the Aldan Shield (AN SSSR, Moscow, 1962) [in Russian].Google Scholar
  11. 11.
    E. A. Belousova, W. L. Griffin, S. Y. O’Reilly, and N. I. Fisher, Contrib. Mineral. Petrol. 143, 602–622 (2002).CrossRefGoogle Scholar
  12. 12.
    J. P. Burg, J.-L. Bodinier, N. Gerya, et al., J. Petrol. 50, 289–321 (2009).CrossRefGoogle Scholar
  13. 13.
    K. N. Malitch, I. Yu. Badanina, A. A. Efimov, and Yu. L. Ronkin, in Proc. XIII Quadrennial IAGOD Symp., Univ. Adelaide, Adelaide, 2011, pp. 232–233.Google Scholar
  14. 14.
    D. Rubatto, Chem. Geol. 184, 123–138 (2002).CrossRefGoogle Scholar
  15. 15.
    I. S. Williams, Rev. Econ. Geol. 7, 1–35 (1998).Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • K. N. Malitch
    • 1
    Email author
  • A. A. Efimov
    • 1
  • I. Yu. Badanina
    • 1
  1. 1.Zavaritskii Institute of Geology and Geochemistry, Ural BranchRussian Academy of SciencesYekaterinburgRussia

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