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

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 o...

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Hauptverfasser: Tzifas, Ioannis (VerfasserIn) , Glasmacher, Ulrich A. (VerfasserIn) , Misaēlidēs, Panagiōtēs (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2017
In: Journal of radioanalytical and nuclear chemistry
Year: 2017, Jahrgang: 311, Heft: 1, Pages: 465-472
ISSN:1588-2780
DOI:10.1007/s10967-016-4973-4
Online-Zugang:Verlag, Volltext: https://link.springer.com/content/pdf/10.1007%2Fs10967-016-4973-4.pdf
Verlag, Volltext: http://dx.doi.org/10.1007/s10967-016-4973-4
Verlag, Volltext: https://link.springer.com/article/10.1007/s10967-016-4973-4
Volltext
Verfasserangaben:I.T. Tzifas, U.A. Glasmacher, P. Misaelides, A. Godelitsas, P.N. Gamaletsos, J. Goettlicher, D. Françoso de Godoy
Beschreibung
Zusammenfassung: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.
Beschreibung:Gesehen am 12.07.2017
Published online 4 August 2016
Beschreibung:Online Resource
ISSN:1588-2780
DOI:10.1007/s10967-016-4973-4

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