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X-ray fluorescence mapping as a first-hand tool in disseminated ore assessment: sandstone-hosted U–Zr mineralization

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    SYSNO ASEP0507830
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleX-ray fluorescence mapping as a first-hand tool in disseminated ore assessment: sandstone-hosted U–Zr mineralization
    Author(s) Mikysek, Petr (GLU-S) SAI, ORCID
    Trojek, T. (CZ)
    Mészárosová, Noemi (GLU-S) ORCID, RID, SAI
    Adamovič, Jiří (GLU-S) RID, SAI, ORCID
    Slobodník, M. (CZ)
    Article number105840
    Source TitleMinerals Engineering. - : Elsevier - ISSN 0892-6875
    Roč. 141, September 2019 (2019)
    Number of pages13 s.
    Publication formPrint - P
    Languageeng - English
    CountryUS - United States
    Keywordselement distribution maps ; X-ray fluorescence ; element correlation ; sandstone ; uranium-zirconium mineralization
    Subject RIVDB - Geology ; Mineralogy
    OECD categoryGeology
    Method of publishingLimited access
    Institutional supportGLU-S - RVO:67985831
    UT WOS000484648400008
    EID SCOPUS85067313081
    DOI10.1016/j.mineng.2019.105840
    AnnotationAnalytical capabilities of X-ray fluorescence for 2-dimensional elemental analysis were tested on worldwide-unique sandstone-hosted U–Zr mineralization (Bohemian Cretaceous Basin, Czech Republic), and combined with measured spectral data. The applied approach was aimed at the detection of uranium and zirconium, visualization of their distribution across mineralized lithological units and description of their relationships with associated elements (As, Fe, Nb, Pb, Sr, Ti). The studied samples were low-grade uranium-bearing sediments. Experimental work employed laboratory 2D scanning X-ray fluorescence analyzer with the gold target Mini-X X-ray tube. Maps of U–Zr and other identified elements demonstrated their patchy distribution and a frequent association of the elements with mineral fillings (clay matrix, organic matter or Fe sulfides). A correlation-based analysis was used to verify geochemical coherence between the measured elements. This showed an extremely strong linear dependence (R ≥ 0.90) between U and Zr. In addition, a strong correlation (R ≥ 0.85) between U–Zr and some associated elements (As, Nb ± Fe, Pb, Sr) was confirmed. The efficiency and the limits of X-ray fluorescence mapping were tested by comparison with high-resolution techniques. Non-destructive mapping of large natural samples provided relevant data for further mineralogical study with respect to rapid pre-concentration of the ore material.
    WorkplaceInstitute of Geology
    ContactJana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272
    Year of Publishing2020
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0892687519302407?via%3Dihub
Number of the records: 1  

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