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Geology of Ore Deposits

, Volume 58, Issue 2, pp 149–165 | Cite as

Formation conditions of paleovalley uranium deposits hosted in upper Eocene–lower Oligocene rocks of Bulgaria

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Abstract

The uranium deposits of Bulgaria related to the Late Alpine tectonomagmatic reactivation are subdivided into two groups: exogenic–epigenetic paleovalley deposits related to the basins filled with upper Eocene–lower Oligocene volcanic–sedimentary rocks and the hydrothermal deposits hosted in the coeval depressions. The geological and lithofacies conditions of their localization, the epigenetic alteration of rocks, mineralogy and geochemistry of uranium ore are exemplified in thoroughly studied paleovalley deposits of the Maritsa ore district. Argumentation of the genetic concepts providing insights into both sedimentation–diagenetic and exogenic–epigenetic mineralization with development of stratal oxidation zones is discussed. A new exfiltration model has been proposed to explain the origin of the aforementioned deposits on the basis of additional analysis with consideration of archival factual data and possible causes of specific ningyoite uranium ore composition.

Keywords

Uranium Eocene Host Rock Oligocene Uranium Mineralization 
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.

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References

  1. Belova, L.N., Gorshkov, A.I., and Ivanova, O.A., New data on ningyoite: Fe-bearing ningyoite, Dokl. Akad. Nauk SSSR, 1978, vol. 234, no. 4, pp. 1022–1023.Google Scholar
  2. Boyle, D.R., Littlejohn, A.L., Roberts, A.S., and Watson, D.M., Ningyoite in uranium deposits of south central British Columbia: first North American occurrence, Can. Mineral., 1981, vol. 19, no. 2, pp. 325–331.Google Scholar
  3. Danchev, V.I. and Strelyanov, N.P., Ekzogennye mestorozhdeniya urana. Usloviya obrazovaniya i metody izucheniya (Exogenic Uranium Deposits, Conditions of Formation and Methods of Study), Moscow: Atomizdat, 1979.Google Scholar
  4. Ekzogennye epigeneticheskie mestorozhdeniya urana. Usloviya obrazovaniya (Exogenic Epigenetic Uranium Deposits. Conditions of Formation), Perel’man, A.I., Ed., Moscow: Atomizdat, 1965.Google Scholar
  5. Kajitani, K.A., A geochemical study on the genesis of ningyoite the special calcium uranous phosphate mineral, Econ. Geol., 1970, vol. 65, pp. 470–480.CrossRefGoogle Scholar
  6. Kaplan, H.Uz.S. and Cetinturk, I., The Fakili uranium deposit and its formation, in Proceedings of Symposium on Formation of Uranium Ore Deposits, Athens–Vienna: IAEA, 1974, pp. 453–465.Google Scholar
  7. Katayama, I., Kubo, Kh., and Khirono, S., Genesis of uranium deposits of the Tono Mine, Japan, in Proceedings of Symposium on Formation of Uranium Deposits, Athens–Vienna: IAEA, 1974, pp. 437–425.Google Scholar
  8. Kislyakov, Ya.M. and Shchetochkin, V.N., Classification of hydrogenic deposits, Otechestvennaya Geol., 1993, no. 6, pp. 59–67.Google Scholar
  9. Kobets, L.V. and Umreiko, D.S., Uranium phosphates, Uspekhi Khimii, 1983, vol. 52, pp. 897–921.Google Scholar
  10. Kondrat’eva, I.A., Bobrova, L.I., and Maksimova, I.G., Epigenetic alterations of the ore-bearing deposits and their role in localization of the uranium mineralization at the Semisbai deposit, in Mater. po geologii mestorozhdenii redkikh i redkozemel’nykh metallov (Proceedings on Geology of Trace and Rare-Earth Metal Deposits), Moscow: VIMS, vol. 70, 1981, pp. 158–175.Google Scholar
  11. Kotov, E.I. and Plotnikov, E.P., Hydrothermal uranium mineralization in the regions of the late Alpine activation, in Osobennosti geologii gidrotermal’nykh rudnykh mestorozhdenii (Geological Features of the Hydrothermal Ore Deposits), Moscow: Nauka, 1978, pp. 168–178.Google Scholar
  12. Krilov, O. and Dragomanov, L., Facies–Paleogeographical sedimentation conditions at the end of Eocene in Bulgaria, in Reports of Scientific Conference Devoted to the 30th Anniverasry of VGMI, Sofia, 1983.Google Scholar
  13. Locardi, E. and Mittemperher, M., Exhalative supergenic uranium, thorium and marcasite occurrences in quaternary volcanites of Central Italy, Bull. Volcanol., 1971, vol. 35, pp. 84–173.CrossRefGoogle Scholar
  14. Mikhailov, Ya., Krylov, O.N, Strelyanov, N.P., Dekov, D., and Ivanov, A.D., Pecularities of the formation of exogenic uranium mineralization in the Paleogene tuffogenic–sedimentary rocks, Geol. Rudn. Mestorozhd., 1987, no. 1, pp. 87–93.Google Scholar
  15. Muto, T., The precipitation environment of ninguoite, Miner. J.(Japan), 1962, no. 3, pp. 306–337.CrossRefGoogle Scholar
  16. Nasedkin, V.V., Vodosoderzhashchie vulkanicheskie stekla kislogo sostava, ikh genezis i primenenie (Water-Bearing Acid Volcanic Glasses: their Genesis and Application), Moscow: Trudy IGEM ANSSSR, 1963.Google Scholar
  17. Pal’shin, I.G., Simov, S.D., Volchanova, E.P., and Volchanov, A.G., Geology and localization conditions of uraniferous fluorapatites, in Osobennosti geologii gidrotermal’nykh rudnykh mestorozhdenii (Geological Features of the Hydrothermal Ore Deposits), Moscow: Nauka, 1978, pp. 179–193.Google Scholar
  18. Petrova, L.S. and Chistilin, P.E., New data on one of the possible mechanisms of the formation of uranium mineralization: evidence from electron-microscopic studies, in Materialy po geologii uranovykh mestorozhdenii (Materials on Geology of Uranium Deposits), Moscow, 1985.Google Scholar
  19. Shmariovich, E.M., Typification of stratal–infiltration uranium deposits based on the character of artesian basins, Sovetskaya Geol., 1986, no. 8, pp. 31–38.Google Scholar
  20. Tedesco, C., Uranium deposits in Italy, in Uranium Geochemistry, Mineralogy, Geology, Exploration, and Resources, de Vivo, B., Ed., London: The Institution of Mining and Metallurgy, 1986 pp. 179–188.Google Scholar
  21. Vinokurov, S.F., Specifics of localization and possible sources of uranium mineralization in the Paleogene brown coal of the Ukrainian Shield, Inf. Sb. KNT, 1986 no. 18, pp. 72–80.Google Scholar
  22. Vinokurov, S.F., Prokof’ev, V.Yu., Dymkov, Yu.M., and Nesterova, M.V., Fluid inclusions in late minerals from the paleovalley-type uranium deposits of the West Siberian ore region: thermochemical characteristics and genetic applications, Geochem. Int., 2013a, vol. 51, no. 10, pp. 831–851.CrossRefGoogle Scholar
  23. Vinokurov, S.F., Prokof’ev, V.Yu., Mal’kovskii, V.I., Dymkov, Yu.M., Chugaev, A.V., and Nesterova, M.V., Neotectonic stage in the formation of the Khokhlovskoe uranium deposit, eastern Transural Region: structural, hydrochemical, mineralogical, and geochemical formation conditions, Geol. Ore Deposits, 2013b, vol. 55, no. 6, pp. 411–437.CrossRefGoogle Scholar
  24. Wagani, I., Pagel, M., Sanots, E., and Gnos, E., Detrital monazite in the Tim Mersoi basin, Niger: provenance and contribution to the uranium budget in siliciclastic sediments, Can. Mineral., 2011, vol. 49, pp. 487–501.CrossRefGoogle Scholar
  25. Zelenova, O.I., Krylov, O.N., Lisitzyn, A.K., and Marinov, B.N., Uranium mineralization in the Paleogene tuffogenic-sedimentary rocks of the southeastern Bulgaria, in Materialy po geologii uranovykh mestorozhdenii (Materials on Geology of the Uranium Deposits), Moscow, 1985, vol. 96, pp. 31–41.Google Scholar
  26. Zhivov, V.L., Boitsov, A.V., and Shumilin, M.V., Uran: geologiya, dobycha, ekonomika (Uranium: Geology, Mining, and Economics), Moscow: OAO “Atomredmetzoloto”, 2012.Google Scholar

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© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

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

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