1-20 OF 194 RESULTS FOR

sodium uranyl oxide hydrate

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 December 2002
The Canadian Mineralogist (2002) 40 (6): 1579–1586.
...Peter C. Burns; Kathryn M. Deely Abstract A new sodium uranyl oxide hydrate, Na[(UO 2 ) 4 O 2 (OH) 5 ](H 2 O) 2 , has been synthesized by hydrothermal reaction. The structure, space group P 1̅, a 8.0746(9), b 8.4633(10), c 11.2181(13) Å, α 80.398(2), β 87.492(2), γ 71.308(2)°, V 715.97(14) Å 3...
FIGURES | View All (5)
Journal Article
Published: 01 April 2006
American Mineralogist (2006) 91 (4): 658–666.
...Karrie-Ann Kubatko; Katheryn Helean; Alexandra Navrotsky; Peter C. Burns Abstract The enthalpies of formation of seven uranyl oxide hydrate phases and one uranate have been determined using high-temperature oxide melt solution calorimetry: [(UO 2 ) 4 O(OH) 6 ](H 2 O) 5 , metaschoepite; β-UO 2 (OH...
FIGURES
Journal Article
Published: 01 July 2024
American Mineralogist (2024) 109 (7): 1266–1274.
... transformation of the material into a hydrated “clarkeite-like” sodium uranyl oxide with a distinctly different PXRD and Raman spectrum than metaschoepite ( Giammar and Hering 2004 ). Additionally, synthetic bobfinchite is a likely minor byproduct present in sodium diuranate (SDU) yellow cake obtained during...
FIGURES | View All (8)
Journal Article
Published: 01 April 2020
American Mineralogist (2020) 105 (4): 561–568.
.... ( 2004 ) Influence of dissolved sodium and cesium on uranyl-oxide hydrate solubility. Environmental Science and Technology , 38 , 171 – 179 . Glatz , R.E. , Li , Y.P. , Hughes , K.A. , Cahill , C.L. , and Burns , P.C. ( 2002 ) Synthesis and structure of a new Ca uranyl...
FIGURES | View All (9)
Journal Article
Published: 01 October 2017
American Mineralogist (2017) 102 (10): 1977–1980.
...Ewa A. Dzik; Haylie L. Lobeck; Lei Zhang; Peter C. Burns Abstract Autunite, Ca[(UO 2 )(PO 4 )] 2 (H 2 O) 11 , is a common uranyl mineral found in oxidized portions of uranium deposits, as well as subsurface environments contaminated by uranium. Enthalpies of formation of autunite were obtained via...
FIGURES
Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 163–173.
... feuillets contenant des polyèdres à uranyle. (Traduit par la Rédaction) § E-mail address : [email protected] 15 12 1999 26 05 1999 © 2000 Mineralogical Association of Canada 2000 uranium uranyl oxide hydrate of potassium synthetic anion topology crystal structure F...
FIGURES | View All (6)
Journal Article
Published: 01 February 2011
American Mineralogist (2011) 96 (2-3): 417–422.
.... and Hawthorne , F.C. ( 2008 ) The stereochemistry and chemical composition of interstitial complexes in uranyl-oxysalt minerals . Canadian Mineralogist , 46 , 467 – 501 . Sowder , A.G. , Clark , S.B. , and Fjeld , R.A. ( 1999 ) The transformation of uranyl oxide hydrates: The effect...
FIGURES | View All (4)
Journal Article
Published: 01 January 2018
American Mineralogist (2018) 103 (1): 143–150.
..., billietite, curite, schoepite and vandendriesscheite . Journal of Raman Spectroscopy , 38 , 460 – 466 . Giammar , D.E. , and Hering , J.G. ( 2004 ) Influence of dissolved sodium and cesium on uranyl oxide hydrate solubility . Environmental Science & Technology , 38 ( 1 ), 171...
FIGURES | View All (5)
Journal Article
Published: 01 September 2024
American Mineralogist (2024) 109 (9): 1554–1558.
... occurred. Uranyl sulfates, which contain U in its hexavalent oxidation state as the UO 2 2 + uranyl ion, are an important and rapidly growing group of secondary minerals found where hydration-oxidation processes alter primary uranium minerals and sulfides, typically in abandoned mines...
FIGURES
Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 175–181.
... is isostructural with the Pb uranyl oxide hydrate curite. On this basis, a complex series of Sr uranyl oxide hydrates with various Sr:U ratios, analogous to the Pb uranyl oxide hydrate minerals, may exist. Abstract Nous avons affiné la structure de l’analogue synthétique de la curite, Sr 2.82 (H 2 O) 2 [(UO 2...
FIGURES
Journal Article
Published: 30 December 2024
American Mineralogist (2024)
...Carmen E. Chamberlain; Jennifer E.S. Szymanowski; Peter C. Burns Abstract Uranyl silicates are common constituents of the oxidized portions of uranium ore deposits. Uranyl silicates are also known to form on used nuclear fuel pellets under simulated geologic repository conditions. These phases can...
Journal Article
Published: 30 January 2018
The Canadian Mineralogist (2018) 56 (1): 7–14.
... and accurate thermodynamic data. This method has been extensively applied to hydrous uranyl compounds including uranyl oxide hydrate, silicate, carbonate, vanadate, phosphate, and sulfate minerals, as well as uranyl peroxide cage clusters, and has been found to be problem-free ( Dzik et al . 2017 , Gorman...
FIGURES
Journal Article
Published: 01 June 2003
The Canadian Mineralogist (2003) 41 (3): 687–706.
... Joachimsthal, Czech Republic, although the name did not appear until Haidinger (1845) applied it to the material studied by John. Despite recognition of uranyl sulfate minerals almost two centuries ago, the zippeite group remains poorly characterized. In the 1950s, it was still considered to be a hydrated...
FIGURES | View All (10)
Journal Article
Published: 01 June 2003
The Canadian Mineralogist (2003) 41 (3): 707–719.
... structure remains unknown. Here, we report the synthesis and crystal structure of Na 2 (UO 2 )(MoO 4 ) 2 (H 2 O) 4 . We also report the crystal structures of three other uranyl molybdates which, in addition to Na, contain Tl + cations. Sodium- and Ca-bearing uranyl molybdate hydrates are common...
FIGURES
Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 727–735.
... résultats, la formule structurale de la curite peut s’écrire Pb 3+ x (H 2 O) 2 [(UO 2 ) 4 O 4+ x (OH) 3− x ] 2 , Z = 2, les composants du feuillet de polyèdres à uranyle étant entre crochets. (Traduit par la Rédaction) The structure of each Pb uranyl oxide hydrate mineral is now known, but many...
FIGURES | View All (4)
Journal Article
Published: 01 October 2006
The Canadian Mineralogist (2006) 44 (5): 1197–1205.
... & Burns 1999 , Cahill & Burns 2000 , Burns & Li 2002 ), and incorporation of trace levels of Np into the sodium analogue of the uranyl oxide hydrate compreignacite has recently been reported ( Burns et al. 2004 ). The crystal structures of most of the uranyl oxide hydrate minerals are now...
FIGURES | View All (4)
Journal Article
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 973–996.
.... Chernikov & Organova (1996) described a natural specimen of sodium uranyl phosphate hydrate with c’ = 8.99 Å (corresponding to a c cell dimension of 17.98 Å), stoichiometry Na[(UO 2 )(PO 4 )](H 2 O) 5–6 , and referred to this as “natroautunite” (sodium autunite), although this is not an approved...
FIGURES | View All (15)
Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 737–749.
... al. 1996 , Wronkiewicz et al. 1996 , Buck et al. 1998 , Abdelouas et al. 1999 ). Pb uranyl oxide hydrates as a group form from the oxidation of geologically old uraninite, because of the buildup of radiogenic Pb ( Frondel 1958 , Finch & Ewing 1992 ). Seven Pb uranyl oxide hydrate...
FIGURES | View All (7)
Journal Article
Published: 01 January 2021
American Mineralogist (2021) 106 (1): 105–111.
..., especially sodium-uranyl sulfates. The astounding diversity and relatively high structural complexity of uranyl-sulfate minerals were recently emphasized by Gurzhiy and Plášil (2019) . A large number of stable combinatorial linkages of uranyl and sulfate tetrahedra are possible, with the topological...
FIGURES | View All (8)
Journal Article
Published: 08 September 2022
Mineralogical Magazine (2023) 87 (1): 151–159.
... as a transitional phase between pure uranyl-oxide hydroxy-hydrate minerals, such as schoepite, [(UO 2 ) 4 O(OH) 6 ](H 2 O) 6 , and metal-cation-free uranyl sulfates, such as shumwayite, [(UO 2 )(SO 4 )(H 2 O) 2 ] 2 ⋅H 2 O (Kampf et al. , 2017b ). Uranopilite is a typical alteration product of uraninite weathering...
FIGURES | View All (6)