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Geology of Ore Deposits

, Volume 59, Issue 8, pp 729–737 | Cite as

Loparite-(Ce) from the Khibiny Alkaline Pluton, Kola Peninsula, Russia

  • N. G. Konopleva
  • G. Yu. Ivanyuk
  • Ya. A. Pakhomovsky
  • V. N. Yakovenchuk
  • Yu. A. Mikhailova
Minerals and Mineral Parageneses
  • 21 Downloads

Abstract

Data on the occurrence, morphology, anatomy, composition, and formation conditions of loparite-(Ce) in the Khibiny alkaline pluton are given. Loparite-(Ce), (Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6, resulted from metasomatic alteration and assimilation of metamorphic host rocks at the contact with foyaite as well as foyaite on the contact with foidolite. This alteration was the highest in pegmatite, and albitite developed there. A decrease in temperature resulted in enrichment of the perovskite and tausonite endmembers in loparite-(Ce) owing to a decrease in the loparite and lueshite endmembers. La and Ce sharply predominate among rare earth elements in the composition of loparite-(Ce).

Keywords

loparite-(Ce) Khibiny alkaline massif typomorphism rare earth elements 

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • N. G. Konopleva
    • 1
  • G. Yu. Ivanyuk
    • 1
    • 2
  • Ya. A. Pakhomovsky
    • 1
    • 2
  • V. N. Yakovenchuk
    • 1
    • 2
  • Yu. A. Mikhailova
    • 1
    • 2
  1. 1.Nanomaterials Research Center, Kola Scientific CenterRussian Academy of SciencesApatityRussia
  2. 2.Geological Institute, Kola Scientific CenterRussian Academy of SciencesApatityRussia

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