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Crystal structure of the uranyl-molybdate mineral calcurmolite Ca[(UO.sub.2./sub.).sub.3./sub.(MoO.sub.4./sub.).sub.2./sub.(OH).sub.4./sub.](H.sub.2./sub.O).sub.~5.0./sub.: insights from a precession electron-diffraction tomography study
- 1.0537706 - FZÚ 2021 RIV CZ eng J - Journal Article
Steciuk, Gwladys - Škoda, R. - Rohlíček, Jan - Plášil, Jakub
Crystal structure of the uranyl-molybdate mineral calcurmolite Ca[(UO2)3(MoO4)2(OH)4](H2O)~5.0: insights from a precession electron-diffraction tomography study.
Journal of Geosciences. Roč. 65, č. 1 (2020), s. 15-25. ISSN 1802-6222. E-ISSN 1803-1943
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT(CZ) LO1603
EU Projects: European Commission(CZ) CZ.2.16/3.1.00/24510
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : calcurmolite * uranyl-motybdate * crystal structure * modulation * baumoite topology * precession electron diffraction
OECD category: Mineralogy
Impact factor: 1.525, year: 2020
Method of publishing: Open access
Calcurmolite is a rare supergene U mineral formed during the alteration–hydration weathering of uraninite and hypo-gene Mo minerals its structure has remained unsolved owing to a lack of crystal material suitable for conventional structure analysis. Here, single-crystal precession electron-diffraction tomography shows the calcurmolite structure to be modulated. Due to the poor quality of diffraction data, only a kinematical refinement was undertaken. The structure of calcurmolite is based upon the infinite uranyl–molybdate sheets with baumoite topology and an interlayer of 6-coordinated Ca2+ cations with interstitial H2O.
Permanent Link: http://hdl.handle.net/11104/0315563
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Number of the records: 1