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Crystal structure of pseudojohannite, with a revised formula, Cu (sub 3) (OH) (sub 2) [(UO (sub 2) ) (sub 4) O (sub 4) (SO (sub 4) ) (sub 2) ](H (sub 2) O) (sub 12)

Jakub Plasil, Karla Fejfarova, Kia Sheree Wallwork, Michal Dusek, Radek Skoda, Jiri Sejkora, Jiri Cejka, Frantisek Veselovsky, Jan Hlousek, Nicolas Meisser and Joel Brugger
Crystal structure of pseudojohannite, with a revised formula, Cu (sub 3) (OH) (sub 2) [(UO (sub 2) ) (sub 4) O (sub 4) (SO (sub 4) ) (sub 2) ](H (sub 2) O) (sub 12)
American Mineralogist (October 2012) 97 (10): 1796-1803

Abstract

The crystal structure of pseudojohannite from White Canyon, Utah, was solved by charge-flipping from single-crystal X-ray diffraction data and refined to an R (sub obs) =0.0347, based on 2664 observed reflections. Pseudojohannite from White Canyon is triclinic, P1, with a=8.6744(4), b=8.8692(4), c=10.0090(5) Aa, alpha =72.105(4) degrees , beta =70.544(4) degrees , gamma =76.035(4) degrees , and V=682.61(5) Aa (super 3) , with Z=1 and chemical formula Cu (sub 3) (OH) (sub 2) [(UO (sub 2) ) (sub 4) O (sub 4) (SO (sub 4) ) (sub 2) ](H (sub 2) O) (sub 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 (super 2+) , Co (super 2+) , and Zn (super 2+) . The two Cu (super 2+) sites in pseudojohannite are [5]- and [6]-coordinated by H (sub 2) O molecules and OH groups. The crystal structure of the pseudojohannite holotype specimen from Jachymov was refined using Rietveld refinement of high-resolution powder diffraction data. Results indicate that the crystal structures of pseudojohannite from White Canyon and Jachymov are identical.


ISSN: 0003-004X
EISSN: 1945-3027
Coden: AMMIAY
Serial Title: American Mineralogist
Serial Volume: 97
Serial Issue: 10
Title: Crystal structure of pseudojohannite, with a revised formula, Cu (sub 3) (OH) (sub 2) [(UO (sub 2) ) (sub 4) O (sub 4) (SO (sub 4) ) (sub 2) ](H (sub 2) O) (sub 12)
Affiliation: Masaryk University, Department of Geological Sciences, Brno, Czech Republic
Pages: 1796-1803
Published: 201210
Text Language: English
Publisher: Mineralogical Society of America, Washington, DC, United States
References: 39
Accession Number: 2013-001145
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 8 tables
N50°22'00" - N50°22'00", E12°55'00" - E12°55'00"
N37°00'00" - N38°30'00", W111°13'00" - W109°02'60"
Secondary Affiliation: Academy of Science of the Czech Republic, Institute of Physics, CZE, Czech RepublicAustralian Synchrotron, AUS, AustraliaNational Museum, CZE, Czech RepublicCzech Geological Survey, CZE, Czech RepublicUniversity of Lausanne, CHE, SwitzerlandSouth Australian Museum, AUS, AustraliaUniversity of Adelaide, AUS, Australia
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201301
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