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Doklady Earth Sciences

, Volume 483, Issue 1, pp 1431–1436 | Cite as

Pseudomorphic Rhythmically Banded and Oscillatory Tetrahedrite–Tennantite Aggregates in the Darasun Gold Deposit (Eastern Transbaikalia, Russia): A Result of Coupled Dissolution–Reprecipitation Reactions

  • N. G. LyubimtsevaEmail author
  • N. S. Bortnikov
  • S. E. Borisovsky
  • O. V. Vikent’eva
  • V. Yu. Prokofiev
GEOCHEMISTRY
  • 24 Downloads

Abstract

The rhythmically banded aggregates of Fe–tennantite with oscillatory zoning resulting from simultaneous variations in the concentrations of Sb and As and Zn and Fe were registered in the Darasun gold deposit (Eastern Transbaikalia). These aggregates were formed upon pseudomorphic replacement of early Zn–tetrahedrite. This process was initiated by the dissolution of Zn–tetrahedrite with the formation of an aggregate of galena, bournonite, and late tetrahedrite–tennantite. It is shown that rhythmically banded aggregates with an oscillatory zoning were formed as a result of coupled dissolution–reprecipitation reactions under the conditions that are far from the mineral–fluid chemical equilibrium and variations in the fluid composition controlled by kinetic factors.

Notes

ACKNOWLEDGMENTS

This study was supported by Ministry of Science and High School, project no. 0136-2018-0025. The EMPA studies were supported by the Russian Science Foundation, project no. 14-17-00693-P.

REFERENCES

  1. 1.
    B. W. D. Yardley, C. A. Rochelle, A. C. Barnicoat, et al., Mineral. Mag. 55, 357–365 (1991).CrossRefGoogle Scholar
  2. 2.
    P. Ortoleva, J. Chadam, E. Merino, et al., Am. J. Sci. 287 (10), 1008–1040 (1987).CrossRefGoogle Scholar
  3. 3.
    A. Putnis, M. Prieto, and H. Stoll, EMU Notes Mineral. 10, 43–64 (2010).Google Scholar
  4. 4.
    D. A. Timofeevskii, in Scientific Works of Central Scientific Research Geological Prospecting Institute of Nonferrous and Noble Metals (Nedra, Moscow, 1972), Issue 98 [in Russian].Google Scholar
  5. 5.
    N. G. Lyubimtseva, N. S. Bortnikov, S. E. Borisovsky, et al., Geol. Ore Deposits 60 (2), 93–120 (2018).CrossRefGoogle Scholar
  6. 6.
    C. V. Putnis and L. Fernández-Díaz, EMU Notes Mineral. 10, 189–226 (2010).Google Scholar
  7. 7.
    J. Brugger, W. Liu, B. Etschmann, et al., Chem. Geol. 447, 219–235 (2016).CrossRefGoogle Scholar
  8. 8.
    M. H. Reed and J. Palandri, Rev. Mineral. Geochem. 61, 609–631 (2006).CrossRefGoogle Scholar
  9. 9.
    H. D. Holland, M. Borcsik, J. Munoz, et al., Geochim. Cosmochim. Acta 27 (9), 957–977 (1963).CrossRefGoogle Scholar
  10. 10.
    F. Lippmann, Neues Jahrb. Mineral., Abh. 139 (1), 1–25 (1980).Google Scholar
  11. 11.
    M. Pietro, Rev. Mineral. Geochem. 70, 47–85 (2009).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • N. G. Lyubimtseva
    • 1
    Email author
  • N. S. Bortnikov
    • 1
  • S. E. Borisovsky
    • 1
  • O. V. Vikent’eva
    • 1
  • V. Yu. Prokofiev
    • 1
  1. 1.Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of SciencesMoscowRussia

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