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- Title
Uranium-bearing francolites present in organic-rich limestones of NW Greece: a preliminary study using synchrotron radiation and fission track techniques.
- Authors
Tzifas, I.; Glasmacher, U.; Misaelides, P.; Godelitsas, A.; Gamaletsos, P.; Goettlicher, J.; Godoy, D.
- 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 U L -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.
- Subjects
GREECE; URANIUM; LIMESTONE; SYNCHROTRON radiation; FISSION track dating; APATITE
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2017, Vol 311, Issue 1, p465
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-016-4973-4