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vandenbrandeite

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Journal Article
Published: 03 April 2023
American Mineralogist (2023) 108 (4): 695–708.
.... Secondary alteration products may also be poorly crystalline or even amorphous, making characterization difficult during the pre-closure period owing to the high radiation field close to the canister. Vandenbrandeite, [CuUO 2 (OH) 4 ], is a rare mineral in nature but known to form by alteration of primary...
FIGURES | View All (12)
Journal Article
Published: 01 June 1951
American Mineralogist (1951) 36 (5-6): 394–410.
...I. H. Milne; E. W. Nuffield Abstract Vandenbrandeite is triclinic with a 7.84, b 5.43, c 6.09 kX; α 91°52′, β 102°00′, γ 89°37′ and cell content 2[CuUO 4 · 2H 2 O]. An angle table has been calculated and powder data are given. The usual method of defining crystal systems in terms...
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Optical photomicrographs of selected <span class="search-highlight">vandenbrandeite</span> fragments ( a ) Sample...
Published: 03 April 2023
Figure 2. Optical photomicrographs of selected vandenbrandeite fragments ( a ) Sample BGS 756/1 is relatively uniform, blue-green vandenbrandeite with a glassy or vitreous luster. ( b ) Sample NMW 83.41G.M3734 is variably vitreous greenish-black, porous, earthy, dull blue-green vandenbrandeite
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BSE image of a typical earthy <span class="search-highlight">vandenbrandeite</span> fragment, with corresponding ...
Published: 03 April 2023
Figure 6. BSE image of a typical earthy vandenbrandeite fragment, with corresponding EDXA element maps of the same area, from sample NMW 83.41G.M3734. The elemental maps reveal the presence and distribution of inclusions of copper sulfide (S), silica (Si), hydrotalcite (Mg-Al), and gypsum (Ca-S
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XRD patterns for the two <span class="search-highlight">vandenbrandeite</span> specimens. Peaks are labeled with ...
Published: 03 April 2023
Figure 5. XRD patterns for the two vandenbrandeite specimens. Peaks are labeled with the lattice spacings in angstroms. The two broad features centered around 16 and 22 2θ° are from the double-sided tape used to secure the fragments in place and were used to normalize intensities. A library XRD
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( a ) PDOS of <span class="search-highlight">vandenbrandeite</span> showing only those states with a non-zero con...
Published: 03 April 2023
Figure 9. ( a ) PDOS of vandenbrandeite showing only those states with a non-zero contribution in the energy range plotted. Positive and negative density values indicate the α- and β-spin channels, respectively. The black dotted line represents the Fermi energy. ( b ) Band structure
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Qualitative EDXA spectra for <span class="search-highlight">vandenbrandeite</span> samples: ( a ) sample BGS 756&#x2F;...
Published: 03 April 2023
Figure 4. Qualitative EDXA spectra for vandenbrandeite samples: ( a ) sample BGS 756/1; ( b ) sample NMW 83.41G.M3734. a.u. = arbitrary units.
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Raw <span class="search-highlight">vandenbrandeite</span> Raman spectra for BGS 756&#x2F;1, obtained at four laser wav...
Published: 03 April 2023
Figure 10. Raw vandenbrandeite Raman spectra for BGS 756/1, obtained at four laser wavelengths (785, 633, 532, and 457 nm), and a single spectrum at 785 nm for NMW 83.41G.M3734. a.u. = arbitrary units. (Color online.)
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Projection of the structure of <span class="search-highlight">vandenbrandeite</span> along [110]. The  Ur ϕ 5  an...
Published: 01 June 2003
F ig . 5. Projection of the structure of vandenbrandeite along [110]. The Ur ϕ 5 and Cuϕ 5 polyhedra are shown in yellow and blue, respectively.
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Excitation spectrum for <span class="search-highlight">vandenbrandeite</span> specimen NMW 83.41G.M3734). The thi...
Published: 03 April 2023
Figure 8. Excitation spectrum for vandenbrandeite specimen NMW 83.41G.M3734). The thick black line represents the experimental data, the gray line an indication of instrumental noise, the blue lines are the individual resolved peaks and the red line the overall resolved fit. a.u. = arbitrary
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BSE images of typical fragments of the <span class="search-highlight">vandenbrandeite</span> samples BGS 756&#x2F;1 ( ...
Published: 03 April 2023
Figure 3. BSE images of typical fragments of the vandenbrandeite samples BGS 756/1 ( a and b ) and NMW 83.41G.M3734 ( c with highlighted area in the white box shown in d ). Both specimens show porous and etched crystal surfaces. Minor inclusions of dark Mg-Al silicate (Mg) were observed
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Emission spectra for <span class="search-highlight">vandenbrandeite</span> ( a ) BGS Ref BGS 756&#x2F;1 and ( b ) NMW ...
Published: 03 April 2023
Figure 7. Emission spectra for vandenbrandeite ( a ) BGS Ref BGS 756/1 and ( b ) NMW Ref NMW 83.41G.M3734. λ ex was held at 357.6 nm. The black line represents the experimental data with the red line providing an indication of baseline sensitivity in this λ em region. a.u. = arbitrary units
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Crystal structure image showing sheet plan ( top ) and side ( bottom ) view...
Published: 03 April 2023
Figure 1. Crystal structure image showing sheet plan ( top ) and side ( bottom ) view for vandenbrandeite derived in this study: green represents uranium; blue, the Cu 2+ cation; red, oxygen; white, hydrogen; and dashed lines, the hydrogen bonding interactions. The image was created using VESTA
Journal Article
Published: 01 March 2018
European Journal of Mineralogy (2018) 30 (2): 237–251.
... oxidation-hydration weathering of uraninite that leads to the formation of UOH phases; (2) incorporation of a large amount of H + , in the form of H 2 O and (OH) − ; (3) incorporation of other elements during weathering, mostly K + , Pb 2+ or Ca 2+ . The simplest UOH mineral is vandenbrandeite, triclinic...
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Journal Article
Published: 01 June 2003
The Canadian Mineralogist (2003) 41 (3): 677–685.
...F ig . 5. Projection of the structure of vandenbrandeite along [110]. The Ur ϕ 5 and Cuϕ 5 polyhedra are shown in yellow and blue, respectively. ...
FIGURES | View All (5)
Journal Article
Published: 01 September 2000
American Mineralogist (2000) 85 (9): 1294–1297.
... ) Vandenbrandeite CuUO 2 (OH) 4 . Crystal Strucure Communications , 6 , 53 –56. Taylor, J.C., Stuart, W.I., and Mumme, I.A. ( 1981 ) The crystal structure of curite. Journal of Inorganic and Nuclear Chemistry , 43 (10), 2419 –2423. Wronkiewicz, D.J. and Buck, E.C. ( 1999 ) Uranium mineralogy...
FIGURES
Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (5): 959–967.
...) Weissbach (1873) ; Hughes et al . (2003) Vandenbrandeite Cu(UO 2 )(OH) 4 Schoep (1932) ; Rosenzweig & Ryan (1977) Vandendriesscheite Pb 1.5 [(UO 2 ) 10 O 6 (OH) 11 ](H 2 O) 11 Vaes (1947) ; Burns (1997) Wölsendorfite Pb 6.16 Ba 0.36 [(UO 2 ) 14 O 19 (OH) 4 ](H 2 O) 12 Protas...
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Journal Article
Published: 01 April 2009
European Journal of Mineralogy (2009) 21 (2): 515–520.
.... The detailed assignment of the UO 2 bands (Table 2 ) was performed in comparison with the IR spectra of haynesite, (UO 2 ) 3 (OH) 2 (SeO 3 ) 2 .5H 2 O ( Čejka et al. , 1999 ) and of vandenbrandeite, CuUO 2 (OH) 4 ( Čejka, 1994 ). The assignments of AsO 4 , OH and H 2 O bands were performed according...
FIGURES
Journal Article
Published: 01 December 2023
American Mineralogist (2023) 108 (12): 2219–2233.
... et al. 2018a , 2019b ; Finch et al. 1996 , 1998 ; Kirkegaard et al. 2019 , 2020 ; Weller et al. 2000 ), vandenbrandeite [Cu(UO 2 ) (OH) 4 ] ( Botto et al. 2002 ; Colmenero et al. 2019d ; Timón et al.), vandendriesscheite {Pb 1.57 [(UO 2 ) 10 O 6 (OH) 11 ]·11H 2 O} ( Burns 1997 ; Frondel et al...
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Journal Article
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 129–141.
... Pb 2 [(UO 2 ) 5 O 6 (OH) 2 ](H 2 O) 4 [20] Wölsendorfite [DRUDRUDRUPUPURDURDURDPDP] 14:23 Wölsendorfite Pb 6.16 Ba 0.36 [(UO 2 ) 14 O 19 (OH) 4 ](H 2 O) 12 [21] Curite (UD) 6 (U m ) 6 8:14 Curite Pb 3 (H 2 O) 2 [(UO 2 ) 8 O 8 (OH) 6 ](H 2 O) 1 [22] Vandenbrandeite...
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