Geology of Ore Deposits

, Volume 48, Issue 6, pp 489–498 | Cite as

Chronology of hydrothermal and magmatic activity in the Dukat gold-silver ore field



The previously published and newly obtained geological and geochronological (Rb-Sr and Ar-Ar) data show that the igneous rocks and products of hydrothermal alteration in the Dukat ore field pertain to two ore-forming magmatic-hydrothermal systems (OMHSs). The igneous rocks of the Early Cretaceous rift-related OMHS are represented by potassium rhyolites of the Askol’d Formation with Rb-Sr ages of 124 ± 3 and 119.3 ± 3.4 Ma and intercalating amygdaloidal basalts. The products of the hydrothermal activity of this OMHS are the metasomatic anatase-chlorite assemblage of the root zone, which replaces potassium rhyolites, and shallow-seated quartz-adularia and quartz-carbonate-feldspar veinlets retained in rhyolite fragments in Late Cretaceous conglomerate and breccia. The Late Cretaceous OMHS was related to the origination of the Okhotsk-Chukotka volcanic belt and consists of calc-alkaline basaltic andesites of the Tavvatum Formation and moderately silicic K-Na rhyolites of the Nayakhan Formation with a Rb-Sr age of 84 ± 4 Ma. The Late Cretaceous postmagmatic hydrothermal activity in the Dukat ore field resulted in the formation of preore metasomatic rocks and orebodies of the unique Dukat Au-Ag deposit. The first stage of the Late Cretaceous hydrothermal activity gave birth to preore propylites with a Rb-Sr isochron age of adularia samples estimated at 85 ± 1 Ma and quartz-chlorite-sulfide and Ag-bearing quartz-chlorite-adularia orebodies with Rb-Sr isochron ages of adularia estimated at 84 ± 1 and 86.1 ± 4 Ma. The second stage was marked by the formation of garnet-bearing propylites and quartz-rhodonite orebodies with a Rb-Sr age of 73 ± 3 Ma. Further hydrothermal activity occurred after a break related to structural rearrangement of the ore field and was expressed in the replacement of propylites by products of argillin alteration and Ag-bearing Mn hydroxides. Paleogene basaltic dikes and related subeconomic mineralization concluded magmatic and hydrothermal processes in the Dukat ore field.


Cretaceous Late Cretaceous Early Cretaceous Hydrothermal Activity Metasomatic Rock 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Yu. S. Berman, V. Yu. Prokof’ev, S. V. Kozerenko, et al., “Rejuvenation of Au-Ag Ore Mineralization at the Dukat Volcanic Deposit from Results of Fluid Inclusions Study,” Geokhimiya 31(4), 539–548 (1993).Google Scholar
  2. 2.
    I. V. Chernyshev, L. G. Filimonova, A. V. Chugaev, et al., “Sources of Au-Ag Ore Matter of the Dukat Deposit (Northeast of Russia) As Deduced from Rb, Sr, and Nd Isotopic Composition,” Geol. Rudn. Mestorozhd. 47(4), 299–314 (2005) [Geol. Ore Deposits 47 (4), 269–282 (2005)].Google Scholar
  3. 3.
    I. V. Chernyshev, N. I. Serdyuk, D. Z. Zhuravlev, et al., “Precision Strontium Isotopic Analysis with Use of Single-Filament Ionization,” in Mass-Spectrometry and Isotopic Geology (Nauka, Moscow, 1983), pp. 30–43 [in Russian].Google Scholar
  4. 4.
    L. G. Filimonova, “Postmagmatic Mineral Assemblages in Rhyolites of the Dukat Volcanic-Plutonic Structure and Their Relations to Ore Mineralization,” Geol. Rudn. Mestorozhd. 44(3), 248–263 (2002) [Geol. Ore Deposits 44 (3), 213–225 (2002)].Google Scholar
  5. 5.
    L. G. Filimonova, “Garnet-Bearing Zones of Postmagmatic Alteration of Rhyolites in the Dukat Ore Field and Their Relationship to High-Grade Au-Ag Ores,” Geol. Rudn. Mestorozhd. 46(5), 248–263 (2004) [Geol. Ore Deposits 46 (5), 387–396 (2004)].Google Scholar
  6. 6.
    L. G. Filimonova and N. V. Trubkin, “Dispersed Ore Minerals in Preore Metasomatic Rocks of the Dukat Ore Field (Northeast of Russia),” Geokhimiya 42(2), 251–262 (2004) [Geochem. Int. 42 (2), 145–153 (2004)].Google Scholar
  7. 7.
    G. G. Filipova and L. N. Abramova, Late Cretaceous Flora in the Northeast of Russia (Nedra, Moscow, 1993) [in Russian].Google Scholar
  8. 8.
    W. F. Giggenbach, “The Origin and Evolution of Fluid in Magmatic-Hydrothermal System,” in Geochemistry of Hydrothermal Ore Deposits (Pennsylvania State Univ. Press, New York, 1997), pp. 737–796.Google Scholar
  9. 9.
    V. I. Goncharov and A. A. Sidorov, Thermobarogeochemistry of Volcanogenic Ore Mineralization (Nauka, Moscow, 1979) [in Russian].Google Scholar
  10. 10.
    R. V. Henley, “The Geothermal Framework of Epithermal Deposits,” Rev. Econ. Geol. 2, 1–21 (1985).Google Scholar
  11. 11.
    D. I. Kolesnikov, M. I. Rozinov, and N. G. Shatkov, “Metamorphism of Volcanic Sequences and Silver Ores at the Dukat Deposit”, Rudy Metaly, No. 5, 36–43 (1998).Google Scholar
  12. 12.
    D. I. Kolesnikov, Yu. P. Shergina, M. I. Rozinov, et al., “Age of Silver and Tin Mineralization of the Ken Area (Northeast of Russia),” Tikhookean. Geol. 17(4), 80–86 (1998).Google Scholar
  13. 13.
    M. M. Konstantinov, A. I. Kalinin, V. E. Natalenko, et al., The Dukat Au-Ag Deposit (Nedra, Moscow, 1998) [in Russian].Google Scholar
  14. 14.
    I. N. Kotlyar, I. L. Zhulanova, and A. V. Gagieva, “The Buyunda-Sugoi Ore Concentration Spot: A Unique Metallogenic Area in the Northeast of Russia,” Tikhookean. Geol. 23(1), 3–19 (2004).Google Scholar
  15. 15.
    I. N. Kotlyar, I. L. Zhulanova, T. B. Rusakova, et al., Isotopic Systems of Igneous and Metamorphic Complexes in the Northeast of Russia (Magadan, 2001) [in Russia].Google Scholar
  16. 16.
    P. W. Lipman, B. R. Doe, C. E. Hedge, et al., “Petrological Evolution of the San Juan Volcanic Field, Southwestern Colorado: Pb and Sr Isotope Evidence,” Bull. Geol. Soc. Am. 89, 59–82 (1994).CrossRefGoogle Scholar
  17. 17.
    D. McCoy, R. J. Newberry, P. Layer, et al., “Plutonic Related Gold Deposits of Interior Alaska. Mineral deposits of Alaska,” Econ. Geol., Monog. 9, 191–241 (1997).Google Scholar
  18. 18.
    I. McDougall and T. M. Harrison, Geochronology and Thermochronology by the 40 Ar/39 Ar Method (Oxford Univ. Press, New York, 1988).Google Scholar
  19. 19.
    R. J. Newberry, P. W. Layer, P. B. Hans, et al., “Preliminary Analysis of Mesozoic Magmatism, Tectonics, and Mineralization Chronology in the Northeast Russia Taking with Allowance for 40Ar/39Ar Datings and Data on Trace Elements in Igneous and Mineralized Rocks,” in Gold Mineralization and Granitoid Magmatizm in the Northern Pacific: Vol. 1. Geology, Geochronology, and Geochemistry (Magadan, 2000), pp. 181–205 [in Russian].Google Scholar
  20. 20.
    G. S. Plyusnin, M. N., Zakharov, R. G. Kravtsova, et al., “Rb-Sr Age of Ore-Bearing Leucogranites in the Balygychan-Sugoi Trough (Northeast Russia),” Dokl. Akad. Nauk SSSR 309(5), 1196–1199 (1989).Google Scholar
  21. 21.
    V. A. Ponomarchuk and V. I. Sotnikov, “Time Factor in Formation of Porphyry Copper-Molybdenum Deposits”, in Isotopic Geochronology: Implications for Geodynamic and Ore Formation (Tsentr Inform. Kul’tury, St. Petersburg, 2003), pp. 372–376 [in Russian].Google Scholar
  22. 22.
    I. S. Raevskaya, A. I. Kalinin, and V. E. Natalenko, “Mineralization Stages and Megastages at a Gold-Silver Deposit”, in Contribution to Geology and Mineral Resources of the Northeast of the USSR (Northeast Territorial Geol. Survey, Magadan, 1977), No. 23, pp. 149–155 [in Russian].Google Scholar
  23. 23.
    M. I. Rozinov, D. I. Kolesnikov, and Yu. P. Shergina, “Rb-Sr Age of Ore Mineralization at the Dukat Silver Deposit,” Geol. Rudn. Mestorozhd. 46(6), 524–539 (2004) [Geol. Ore Deposits 46 (6), 454–467 (2004)].Google Scholar
  24. 24.
    D. V. Rundquist, “Time Factor in the Formation of Hydrothermal Deposits: Periods, Epochs, Megastages, and Stages of Ore Formation,” Geol. Rudn. Mestorozhd. 39(1), 11–24 (1997) [Geol. Ore Deposits 39 (1), 8–19 (1997)].Google Scholar
  25. 25.
    Yu. G. Safonov, N. S. Bortnikov, T. M. Zlobina, et al., “The Adrasman-Kanimansur Polymetallic (Ag, Rb, U, Cu, Bi, Zn, F) Ore Field (Tajikistan) and Its Ore-Forming System. I. Geology, Mineralogy, and Structural Conditions of the Ore Deposition,” Geol. Rudn. Mestorozhd. 42(3), 195–211 (2000) [Geol. Ore Deposits 42 (3), 175–188 (2000)].Google Scholar
  26. 26.
    M. S. Sakharova, N. N. Krivitskaya, and S. K. Ryakhovskaya, “Ore Concentration at Gold-Silver Deposits of the Okhotsk-Chukotka Belt,” Vestn. Mosk. Univ., Ser. Geol., No. 2, 60–70 (2000).Google Scholar
  27. 27.
    V. A. Samylina, “Correlation of Continental Cretaceous Rocks in the Northeast of the USSR,” Sov. Geol., No. 6, 43–53 (1986).Google Scholar
  28. 28.
    A. A. Sidorov, M. M. Konstantinov, V. A. Naiborodin, et al., Silver (Nauka, Moscow, 1989) [in Russian].Google Scholar
  29. 29.
    L. V. Tauson, G. N. Gundobin, and L. D. Zorina, Geochemical Fields of Ore-Magmatic Systems (Nauka, Novosibirsk, 1987) [in Russian].Google Scholar
  30. 30.
    N. P. Vargunina and N. I. Andrusenko, “Mineralogical-Geochemical Specific Features of a Polygenetic Au-Ag Deposit,” Dokl. Akad. Nauk SSSR 269(2), 419–423 (1983).Google Scholar
  31. 31.
    V. N. Volkov, M. M. Arakelyants, and Yu. N. Rodnov, “The Age of Magmatism and Ore Mineralization in the Balygychan-Sugoi Superimposed Trough in the Northeast of the USSR: K-Ar Data”, in Mass Spectrometry and Isotopic Geology (Nauka, Moscow, 1983), pp. 137–149 [in Russian].Google Scholar
  32. 32.
    N. C. White and J. W. Hedenquist, “Epithermal Environments and Styles of Mineralization: Variations and Their Causes, and Guidelines for Exploration,” J. Geochem. Exploration 36, 445–474 (1990).CrossRefGoogle Scholar
  33. 33.
    V. A. Zharikov V. L., Rusinov, A. A. Marakushev, et al., Metasomatism and Metasomatic Rocks (Nauchnyi Mir, Moscow, 1998) [in Russian].Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  1. 1.Institute of Geology of Ore Deposits, Petrography, Mineralogy, and GeochemistryRussian Academy of SciencesMoscowRussia

Personalised recommendations