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rameauite

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Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (5): 959–967.
...Jakub Plášil; Radek Škoda; Jiří Čejka; Vincent Bourgoin; Jean-Claude Boulliard Abstract Rameauite is a rare supergene uranyl-oxide hydroxy-hydrate mineral that forms during hydration-oxidation weathering of uraninite. On the basis of single-crystal X-ray diffraction data collected on a microfocus...
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Raman spectrum of <span class="search-highlight">rameauite</span> measured with 633 nm laser.
Published: 01 December 2016
Fig. 2 Raman spectrum of rameauite measured with 633 nm laser.
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A prismatic crystal of <span class="search-highlight">rameauite</span> growing on fine grained compreignacite. Se...
Published: 01 December 2016
Fig. 1 A prismatic crystal of rameauite growing on fine grained compreignacite. Secondary electron image, by V. Bourgoin and J.-C. Boulliard.
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Structural sheet of β-U 3 O 8  uranyl-anion topology found in <span class="search-highlight">rameauite</span>, ch...
Published: 01 December 2016
Fig. 4 Structural sheet of β-U 3 O 8 uranyl-anion topology found in rameauite, characterized by the R, U and D chains (in thick lines). The positions of the OH groups are marked in blue. Unit-cell edges are outlined with a red solid line. (online version in color)
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Crystal structure of <span class="search-highlight">rameauite</span>. The sheets of U-polyhedra (blue), stacked p...
Published: 01 December 2016
Fig. 3 Crystal structure of rameauite. The sheets of U-polyhedra (blue), stacked perpendicular to b , are separated by interlayer containing monovalent (K + , green) and divalent (Ca 2+ , orange) cations and molecular H 2 O (represented by red colored O atoms). The unit-cell edges are outlined
Journal Article
Published: 01 March 2018
European Journal of Mineralogy (2018) 30 (2): 237–251.
... Billietite Ba[(UO 2 ) 3 O 2 (OH) 3 ] 2 (H 2 O) 4 Pbn 2 1 2615 236 5.88 1388.30 70.04 Agrinierite K 2 (Ca 0.65 Sr 0.35 )[(UO 2 ) 3 O 3 (OH) 2 ] 2 (H 2 O) 5 F 2 mm 4800 100 5.22 522.39 83.00 Rameauite K 2 Ca[(UO 2 ) 6 O 6 (OH) 4 ](H 2 O) 6 Cc 2438 98 5.62 550.24 87.46...
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Journal Article
Published: 01 September 2000
American Mineralogist (2000) 85 (9): 1294–1297.
... formed during vapor hydration of an actinide-bearing borosilicate waste glass. Journal of Nuclear Materials , 278 , 290 –300. Cesbron, F., Brown, W.L., and Bariand, P. ( 1972 ) Rameauite and agrinierite, two new hydrated complex uranyl oxides from Margnac, France. Mineralogical Magazine , 38...
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Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 163–173.
... et al. 1972 , Cahill & Burns 2000 ), and rameauite, K 2 CaU 6 O 20 ·9H 2 O ( Cesbron et al. 1972 ). Each of these have been reported from the Margnac deposit, Haute-Vienne, Massif Central, France, and formed following the alteration of uraninite in K-rich rocks. Elton et al. (1995) also...
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Journal Article
Published: 01 February 2002
The Canadian Mineralogist (2002) 40 (1): 217–224.
.... & Geffroy , J. ( 1972 ): Rameauite and agrinierite, two new hydrated complex uranyl oxides from Margnac, France . Mineral. Mag . 38 , 781 – 789 . Ferraris , G. & Ivaldi , G. ( 1988 ): Bond valence vs bond length in O....O hydrogen bonds . Acta Crystallogr . B44 , 341 – 344...
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Journal Article
Published: 29 September 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (5): 999–1020.
... that crystallize with the β-U 3 O 8 topology, including spriggite ( Brugger et al. 2004 ) and rameauite ( Plášil et al. 2016 , 2021 ), as well as the mixed-valence U minerals ianthinite, wyartite, dehydrated wyartite, and nollmotzite. Shinkolobweite is the fifth mineral recognized to contain essential U 5...
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Journal Article
Published: 01 September 2022
American Mineralogist (2022) 107 (9): 1709–1716.
... 8 ( Loopstra 1970 ), such a sheet was also found in the structures of ianthinite ( Burns et al. 1997b ), billietite ( Finch et al. 2006 ), spriggite ( Brugger et al. 2004 ), rameauite ( Plášil et al. 2016 ), shinkolobweite ( Olds et al. 2017 ), and nollmotzite ( Plášil et al. 2018 ). The stacking...
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Journal Article
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 129–141.
... [12] Meta-wyartite CaU 5+ (UO 2 ) 2 (CO 3 )O 4 (OH)(H 2 O) 3 [13] Rameauite K 2 Ca[(UO 2 ) 6 O 6 (OH) 4 ](H 2 O) 6 [14] Fourmarierite [DUPUDP] 4:7 Fourmarierite Pb[(UO 2 ) 4 O 3 (OH) 4 ](H 2 O) 4 [15] Schoepite [(UO 2 ) 8 O 2 (OH) 12 ](H 2 O) 12 [16...
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Journal Article
Published: 01 September 2017
American Mineralogist (2017) 102 (9): 1771–1775.
... . Plášil , J. , Škoda , R. , Čejka , J. , Bourgoin , V. , and Boulliard , J.-C. ( 2016 ) Crystal structure of the uranyl-oxide mineral rameauite . European Journal of Mineral-ogy , 28 , 959 – 967 . Schindler , M. , and Hawthorne , F.C. ( 2008 ) The stereochemistry...
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Journal Article
Published: 01 January 2018
American Mineralogist (2018) 103 (1): 143–150.
... weathering of uraninite: the current state-of-knowledge . Journal of Geosciences , 59 ( 2 ), 99 – 114 . Plášil , J. , Škoda , R. , Čejka , J. , Bourgoin , V. , and Boulliard , J.-C. ( 2016 ) Crystal structure of the uranyl-oxide mineral rameauite . European Journal...
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Journal Article
Published: 01 April 2020
American Mineralogist (2020) 105 (4): 561–568.
.... Zeitschrift für Kristallographie , 234 , 733 – 733 . DOI: 10.1515/zkri-2019-0035 . Plášil , J. , Škoda , R. , Čejka , J. , Bourgoin , V. , and Boulliard , J.-C. ( 2016 ) Crystal structure of the uranyl-oxide mineral rameauite. European Journal of Mineralogy , 28 , 959 – 967...
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Journal Article
Published: 01 December 2004
The Canadian Mineralogist (2004) 42 (6): 1651–1666.
... , compreignacite, [7] K 2 (H 2 O) 3 [(UO 2 ) 3 O 2 (OH) 3 ] 2 (H 2 O) 4 , billietite, [10] Ba(H 2 O) 4 [(UO 2 ) 3 O 2 (OH) 3 ] 2 (H 2 O) 3 , [8] K 2 ( [9] Ca,Sr) (H 2 O) 5 [(UO 2 ) 3 O 3 (OH) 2 ] 2 , and rameauite, K 2 Ca[(UO 2 ) 6 O 4 (OH) 6 ] (H 2 O) 6 . The chemical composition of their (sheet) structural...
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