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cejkaite

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Journal Article

Actinides in Geology, Energy, and the Environment: Revision of the symmetry and the crystal structure of čejkaite, Na 4 (UO 2 )(CO 3 ) 3 Available to Purchase

Jakub Plášil, Karla Fejfarová, Michal Dušek, Radek Škoda, Jan Rohlíček
Published: 01 April 2013
American Mineralogist (2013) 98 (4): 549–553.
DOI: https://doi.org/10.2138/am.2013.4331
...Jakub Plášil; Karla Fejfarová; Michal Dušek; Radek Škoda; Jan Rohlíček Abstract The crystal structure of čejkaite, Na 4 (UO 2 )(CO 3 ) 3 , from the type locality, was determined for the first time by single-crystal X-ray diffraction. In contrast to the previously reported pseudohexagonal triclinic...
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View PDF for article title, Actinides in Geology, Energy, and the Environment: Revision of the symmetry and the crystal structure of <span class="search-highlight">čejkaite</span>, Na 4 (UO 2 )(CO 3 ) 3
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Aggregates of long prismatic čejkaite crystals on a limonite matrix. FOV 5 mm (photo P. Škácha). (Color online.)

Aggregates of long prismatic čejkaite crystals on a limonite matrix. FOV 5 ... Available to Purchase

Published: 01 April 2013
Figure 1 Aggregates of long prismatic čejkaite crystals on a limonite matrix. FOV 5 mm (photo P. Škácha). (Color online.)
Image
Apexite blades with čejkaite (light yellow online) and colorless equant crystal of gaylussite (upper left); FOV 0.25 mm across. (Color online.)

Apexite blades with čejkaite (light yellow online) and colorless equant cry... Available to Purchase

Published: 01 November 2015
Figure 1 Apexite blades with čejkaite (light yellow online) and colorless equant crystal of gaylussite (upper left); FOV 0.25 mm across. (Color online.)
Image
Grimselite crystals (thick prismatic, greenish) in association with čejkaite (fine crystalline acicular aggregates) on gangue. Field of view 4 mm; photo P. Škácha.

Grimselite crystals (thick prismatic, greenish) in association with čejkait... Available to Purchase

Published: 01 June 2012
F ig . 1. Grimselite crystals (thick prismatic, greenish) in association with čejkaite (fine crystalline acicular aggregates) on gangue. Field of view 4 mm; photo P. Škácha.
Journal Article

Leószilárdite, the first Na,Mg-containing uranyl carbonate from the Markey Mine, San Juan County, Utah, USA Available to Purchase

Travis A. Olds, Luke R. Sadergaski, Jakub Plášil, Anthony R. Kampf, Peter C. Burns, Ian M. Steele, Joe Marty, Shawn M. Carlson, Owen P. Mills
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1039–1050.
DOI: https://doi.org/10.1180/minmag.2016.080.149
..., Utah, USA, in areas with abundant andersonite, natrozippeite, gypsum, anhydrite, and probable hydromagnesite along with other secondary uranium minerals bayleyite, čejkaite and johannite. The new mineral occurs as aggregates of pale yellow bladed crystals flattened on {001} and elongated along [010...
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View PDF for article title, Leószilárdite, the first Na,Mg-containing uranyl carbonate from the Markey Mine, San Juan County, Utah, USA
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Journal Article

Abellaite, NaPb 2 (CO 3 ) 2 (OH), a new supergene mineral from the Eureka mine, Lleida province, Catalonia, Spain Available to Purchase

Jordi Ibáñez-Insa, José J. Elvira, Xavier Llovet, Jordi Pérez-Cano, Núria Oriols, Martí Busquets-Masó, Sergi Hernández
Published: 13 February 2017
European Journal of Mineralogy (2017) 29 (5): 915–922.
DOI: https://doi.org/10.1127/ejm/2017/0029-2630
..., As-rich vanadinite andersonite, čejkaite, malachite and devilline). Abellaite is colourless to white, with a vitreous to nacreous lustre. The mineral is translucent, has a white streak and is non-fluorescent. The aggregates of microcrystals are highly friable. The calculated density using the ideal...
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View PDF for article title, Abellaite, NaPb 2 (CO 3 ) 2 (OH), a new supergene mineral from the Eureka mine, Lleida province, Catalonia, Spain
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Journal Article

Apexite, NaMg(PO 4 )·9H 2 O, a new struvite-type phase with a heteropolyhedral cluster Available to Purchase

Anthony R. Kampf, Stuart J. Mills, Barbara P. Nash, Martin Jensen, Tony Nikischer
Published: 01 November 2015
American Mineralogist (2015) 100 (11-12): 2695–2701.
DOI: https://doi.org/10.2138/am-2015-5457
...Figure 1 Apexite blades with čejkaite (light yellow online) and colorless equant crystal of gaylussite (upper left); FOV 0.25 mm across. (Color online.) ...
FIGURES | View All (4)
View PDF for article title, Apexite, NaMg(PO 4 )·9H 2 O, a new struvite-type phase with a heteropolyhedral cluster
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Journal Article

Mathesiusite, K 5 (UO 2 ) 4 (SO 4 ) 4 (VO 5 )(H 2 O) 4 , a new uranyl vanadate-sulfate from Jáchymov, Czech Republic Available to Purchase

Jakub Plášil, František Veselovský, Jan Hloušek, Radek Škoda, Milan Novák, Jiří Sejkora, Jiří Čejka, Pavel Škácha, Anatoly V. Kasatkin
Published: 01 April 2014
American Mineralogist (2014) 99 (4): 625–632.
DOI: https://doi.org/10.2138/am.2014.4681
... on fractures of gangue associated with adolfpateraite, schoepite, čejkaite, zippeite, gypsum, and a new unnamed K-UO 2 -SO 4 mineral. It is a secondary mineral formed during post-mining processes. Mathesiusite is tetragonal, space group P 4/ n , with the unit-cell dimensions a = 14.9704(10), c = 6.8170(5) Å, V...
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View PDF for article title, Mathesiusite, K 5 (UO 2 ) 4 (SO 4 ) 4 (VO 5 )(H 2 O) 4 , a new uranyl vanadate-sulfate from Jáchymov, Czech Republic
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Le Bail decomposition of the diffraction data of čejkaite, performed for the monoclinic space group Cc. All observed diffraction peaks are described by the model except one, which belongs to an admixture of quartz (indicated on the difference profile).

Le Bail decomposition of the diffraction data of čejkaite, performed for th... Available to Purchase

Published: 01 April 2013
Figure 2 Le Bail decomposition of the diffraction data of čejkaite, performed for the monoclinic space group Cc . All observed diffraction peaks are described by the model except one, which belongs to an admixture of quartz (indicated on the difference profile).
Image
Irregular chains of Na-polyhedra display varying degrees of coordination to UTC units in the related minerals čejkaite, leószilárdite and ježekite. Uranium (yellow), sodium (blue), carbon (black). Various cations have been omitted to highlight the chains of Na-polyhedra in each structure.

Irregular chains of Na-polyhedra display varying degrees of coordination to... Available to Purchase

Published: 01 October 2017
Fig. 7. Irregular chains of Na-polyhedra display varying degrees of coordination to UTC units in the related minerals čejkaite, leószilárdite and ježekite. Uranium (yellow), sodium (blue), carbon (black). Various cations have been omitted to highlight the chains of Na-polyhedra in each structure.
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4
Image

Powder diffraction data for čejkaite I rel d obs d calc ... Available to Purchase

Published: 01 April 2013
Table 5 Powder diffraction data for čejkaite I rel d obs d calc h k l 42 8.058 8.052 0 2 0 8.047 1 1 0 31 5.084 5.081 1̄ 1 1 41 5.029 5.029 0 2 1 47 4.971 4.977 1 1 1 100 4.647 4.648 1 3 0 4.646 2 0 0 22 4.025 4.026 0 4