Uranium-bearing francolites present in organic-rich limestones of NW Greece: a preliminary study using synchrotron radiation and fission track techniques

I. T. Tzifas, U. A. Glasmacher, P. Misaelides, A. Godelitsas, Platon Gkamaletsos, J. Goettlicher, D. Françoso de Godoy

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Synchrotron radiation techniques (μ-XRF and μ-XANES) were applied to the study of organic-rich phosphatized limestones of NW Greece (Epirus). The results revealed uranium accumulation in areas of the material containing, among others, carbonate apatite (francolite) and organic matter. The UL3-edge of μ-XANES spectra showed that uranium was present in tetravalent form. U-bearing francolite crystals were separated from the rock and characterized by Raman spectroscopy and microprobe. The analysis of the crystals also indicated the presence of sodium and sulfur. The uranium presence in the crystals was also visualized, after neutron irradiation and etching, by the observation of the fission tracks.
    Original languageEnglish
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Volume311
    Issue number1
    Pages (from-to)465–472
    Number of pages8
    ISSN0236-5731
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Fission tracks
    • Francolite
    • Phosphatized limestones
    • Raman
    • Uranium
    • μ-XANES
    • μ-XRF

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