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zippeite

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Journal Article
Published: 01 April 2003
American Mineralogist (2003) 88 (4): 676-685.
.... The zippeite-group of minerals is one of the most common and diverse in such settings. To decipher the nature and crystal chemistry of the zippeite-group, the crystal structure of a new natural hydrated Mg uranyl sulfate related to Mg-zippeite was determined. The mineral is named marecottite after the type...
FIGURES
Journal Article
Published: 01 December 2018
Mineralogical Magazine (2018) 82 (6): 1261-1275.
... Juan County, Utah, USA. It occurs with natrozippeite, brochantite, devilline, posnjakite, johannite, gypsum, bobcookite, pickeringite, pentahydrite and the NH 4 -analogue of zippeite: ammoniozippeite. Redcanyonite occurs as radial aggregates of red–orange needles and blades individually reaching up...
FIGURES | View All (8)
Journal Article
Published: 30 January 2018
The Canadian Mineralogist (2018) 56 (1): 7-14.
... repository for nuclear waste. Three members of the uranyl sulfate zippeite group, natrozippeite, cobaltzippeite, and zinczippeite, were synthesized and characterized prior to determination of their standard state enthalpies of formation from binary oxides and from elements using high-temperature drop...
FIGURES
Journal Article
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 117-128.
...Jakub Plášil; Pavel Škácha; Jiří Sejkora; Anthony R. Kampf; Radek Škoda; Jiří Čejka; Jan Hloušek; Anatoly V. Kasatkin; Radim Pavlíček; Karel Babka Abstract The new mineral plavnoite (IMA2015-059), ideally K 0.8 Mn 0.6 [(UO 2 ) 2 O 2 (SO 4 )]·3.5H 2 O, is a member of the zippeite group. It was found...
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Journal Article
Published: 01 October 2014
Mineralogical Magazine (2014) 78 (5): 1249-1264.
... to the zippeite group of minerals, as it is based upon the structural sheets of the zippeite topology of composition [(UO 2 ) 4 O 4 (SO 4 ) 2 ] 4− . Located in the interlayer between the sheets, which are stacked perpendicular to [010], are Ca 2+ cations and H 2 O groups. Ca 2+ ions are [7]-coordinated, by three...
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Journal Article
Published: 01 August 2011
The Canadian Mineralogist (2011) 49 (4): 1089-1103.
...Jakub Plášil; Stuart J. Mills; Karla Fejfarová; Michal Dušek; Milan Novák; Radek Škoda; Jiří Čejka; Jiří Sejkora Abstract The crystal structure of natural zippeite, K 1.85 H + 0.15 [(UO 2 ) 4 O 2 (SO 4 ) 2 OH 2 ](H 2 O) 4 , from Jáchymov, Czech Republic, has been determined by single-crystal X-ray...
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Journal Article
Published: 01 July 2011
American Mineralogist (2011) 96 (7): 983-991.
...Jakub Plášil; Michal Dušek; Milan Novák; Jiří Čejka; Ivana Císařová; Radek Škoda Abstract Sejkoraite-(Y), the triclinic (Y 1.98 Dy 0.24 ) ∑2.22 H 0.34 + [(UO 2 ) 8 O 88 O 7 OH(SO 4 ) 4 ](OH)(H 2 O) 26 , is a new member of the zippeite group from the Červená vein, Jáchymov (Street...
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Journal Article
Published: 01 February 2008
The Canadian Mineralogist (2008) 46 (1): 173-182.
... équivalentes. (Traduit par la Rédaction) Abstract Mixed K– Me zippeite-group phases ( Me = Mn, Co, Ni, Zn) have been synthesized by adjusting a UO 2 SO 4 solution containing Me SO 4 to a pH of 3.8 by means of KOH. The solution was kept for 75 hours at 150°C and an approximate pressure of 3.5 MPa. Single...
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Journal Article
Published: 01 May 2006
American Mineralogist (2006) 91 (5-6): 929-936.
... reflections extracted from the powder diffractogram. Pseudojohannite contains zippeite-type layers oriented parallel to (1̅01). The empirical chemical formula calculated for a total of 70 O atoms is Cu 6.52 U 7.85 S 4.02 O 70 H 55.74 , leading to the simplified chemical formula Cu 6.5 [(UO 2 ) 4 O 4 (SO 4 ) 2...
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Journal Article
Published: 01 June 2003
The Canadian Mineralogist (2003) 41 (3): 687-706.
...Peter C. Burns; Kathryn M. Deely; Leslie A. Hayden Abstract Single crystals of eight zippeite-group compounds have obtained using mild hydrothermal synthesis techniques. The structure of each has been determined with single-crystal diffraction data collected using Mo K α X-radiation and an APEX CCD...
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Journal Article
Published: 01 October 1995
The Canadian Mineralogist (1995) 33 (5): 1091-1101.
Journal Article
Published: 01 November 1976
The Canadian Mineralogist (1976) 14 (4): 429-436.
Journal Article
Published: 01 June 1952
American Mineralogist (1952) 37 (5-6): 394-406.
...R. J. Traill Abstract Attempts have been made to synthesize uranium sulphate minerals. Artificial zippeite having optical properties in agreement with the natural mineral has been prepared. Physical, chemical, optical and x -ray data for zippeite and four other synthetic products are presented...
Image
Two types of <b>zippeite</b> crystals. In the background, the older <b>zippeite</b>, stud...
Published: 01 August 2011
Fig. 1 Two types of zippeite crystals. In the background, the older zippeite, studied by SC–XRD. The younger zippeite (right, focused part of the image) locally covers the massive crystalline aggregates. SE image, field of view 250 μm (JEOL JSM–6380).
Image
Uranyl sulfate sheet of <b>zippeite</b> anion topology found in natural <b>zippeite</b> f...
Published: 01 August 2011
Fig. 5 Uranyl sulfate sheet of zippeite anion topology found in natural zippeite from Jáchymov. Uranyl pentagonal bipyramids of the sheets are shown in blue, the sulfate tetrahedra in yellow, whereas the oxygen atoms are shown in red. The mixed O,OH site O5 is displayed in pink.
Image
SELECTED INTERATOMIC DISTANCES (Å) FOR MAGNESIUM-<b>ZIPPEITE</b>, ZINC-<b>ZIPPEITE</b>. ...
Published: 01 June 2003
TABLE 14. SELECTED INTERATOMIC DISTANCES (Å) FOR MAGNESIUM-ZIPPEITE, ZINC-ZIPPEITE. AND COBALT-ZIPPEITE
Journal Article
Published: 01 October 2012
American Mineralogist (2012) 97 (10): 1796-1803.
... Cu 3 (OH) 2 [(UO 2 ) 4 O 4 (SO 4 ) 2 ](H 2 O) 12 . The crystal structure of pseudojohannite is built up from sheets of zippeite topology that do not contain any OH groups; these sheets are identical to those found in zippeites containing Mg 2+ , Co 2+ , and Zn 2+ . The two Cu 2+ sites...
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Journal Article
Published: 01 February 2012
The Canadian Mineralogist (2012) 50 (1): 147-157.
... 7.0071(9), c 17.3282(19) Å, β98.834(2)°. ( 6 ) Cs 2 (H 2 O) 2 [(UO 2 ) 4 (SeO 3 ) 5 ] is monoclinic, P 2 1 / n , with cell parameters a 10.913(3), b 12.427(3), c 18.448(4) Å, β90.393(3)°. Compounds 1 , 2 , and 3 contain sheets of uranyl pentagonal bipyramids and selenate tetrahedra with the zippeite-type...
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Journal Article
Published: 01 December 1952
American Mineralogist (1952) 37 (11-12): 950-959.
...Clifford Frondel Abstract The status of the many natural uranium sulfates that have been reported is reviewed. Only three appear to be valid species: uranopilite, zippeite and johannite. New optical, chemical and dehydration data are given for uranopilite together with x -ray powder data...
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A comparison of related phases with the <b>zippeite</b> sheet topology.          R...
Published: 01 December 2018
Table 7. A comparison of related phases with the zippeite sheet topology. Redcanyonite Ammoniozippeite ‘SZIPPNH4I’ Zippeite Plavnoite Mn-K-zippeite Locality Red Canyon, USA Burro mine, USA synthetic Jáchymov, CZ Jáchymov, CZ synthetic Reference This work Kampf et al