Kerch ironstones as unconventional Nd and MREE resources: features and prospects

10.47765/0869-5997-2022-10006

Authors

  • Anna V. Nekipelova
    V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
    Junior Researcher 

  • Elina V. Sokol
    V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

    DrScLeading Researcher 

  • Svetlana N. Kokh
    V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

     PhDSenior Researcher

  • Ksenia A. Filippova
    South Ural Federal Research Center for Mineralogy and Geoecology, Ural Branch of the Russian Academy of Sciences, Miass, Russia

     PhDResearcher

Keywords:

Kerch ooidal ironstones, rare earth elements (REE), authigenic LREE phosphates, Nd, MREE, unconventional REE resources.

Abstract

Based on the mineralogy and major and trace element composition (including REE+Y) of bulk samples and in separate size fractions of the ore, the contribution of different REE+Y species to the total REE budget of ironstones from the Kamysh-Burun trough was estimated. Kerch ores have the structure of REE+Y accumulation typical for marine sedimentary iron ore deposits. Light REEs form independent mineralization of authigenic phosphates (rhabdophane-type LREE(PO4)∙nH2O phases) enriched in La, Pr, Nd, and Ca. Medium REEs are mainly adsorbed on Fe3+-(oxy)hydroxides forms. The coexisting Nd and MREE enrichment combined with Th and U depletion allow considering the Kerch ironstones as commercially attractive unconventional resources of rare-earth elements.

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Published

2022-04-27

How to Cite

Некипелова Анна Владиславовна, Сокол Эллина Владимировна, Кох Светлана Николаевна, & Филиппова Ксения Александровна. (2022). Kerch ironstones as unconventional Nd and MREE resources: features and prospects: 10.47765/0869-5997-2022-10006 . Ores and Metals, (1). Retrieved from https://rm.tsnigri.ru/index.php/main/article/view/173

Issue

No. 1 (2022)

Section

COMPREHENSIVE USE OF MINERALS