Doklady Earth Sciences

, Volume 473, Issue 1, pp 281–285 | Cite as

Distribution of rare earths in uranium oxides of the main types of uranium deposits: Causes and genetic meaning

  • S. F. Vinokurov
  • V. N. Golubev
  • A. N. Trunova
  • S. V. Yudintsev
Geochemistry
  • 39 Downloads

Abstract

Three groups of industrial uranium deposits that differ in the distribution of lanthanides in U oxides have been recognized. A dependence of the REE distribution type on the Yttrium content and Yttrium index YI = (La + Ce)/Y that controls the formation of REE phases capable of selective accumulation of lanthanides has been discovered. This indicates the important role of crystal–chemical fractionation in the distribution of lanthanides. Preferable accumulation of Sm–Gd by U oxides has been found to occur at relatively low contents of Y. In Proterozoic uranium deposits, the yttrium specialization of oxides predominates, while in most Phanerozoic deposits the lanthanum–cerium specialization is typical. These results extend the possibilities of using REEs in ores for purposes of study of the genesis of various uranium deposits.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • S. F. Vinokurov
    • 1
  • V. N. Golubev
    • 1
  • A. N. Trunova
    • 1
  • S. V. Yudintsev
    • 1
  1. 1.Institute of Geology of Ore Deposits, Petrography, Mineralogy, and GeochemistryRussian Academy of SciencesMoscowRussia

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