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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 ASEP 0507830 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title X-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 number 105840 Source Title Minerals Engineering. - : Elsevier - ISSN 0892-6875
Roč. 141, September 2019 (2019)Number of pages 13 s. Publication form Print - P Language eng - English Country US - United States Keywords element distribution maps ; X-ray fluorescence ; element correlation ; sandstone ; uranium-zirconium mineralization Subject RIV DB - Geology ; Mineralogy OECD category Geology Method of publishing Limited access Institutional support GLU-S - RVO:67985831 UT WOS 000484648400008 EID SCOPUS 85067313081 DOI 10.1016/j.mineng.2019.105840 Annotation Analytical 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. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S0892687519302407?via%3Dihub
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