New type of cubic-stacked layer structure in anthoinite, AlWO3(OH)(3)

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dc.contributor.authorGrey, IEen_AU
dc.contributor.authorMadsen, ICen_AU
dc.contributor.authorMills, SJen_AU
dc.contributor.authorHatert, Fen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorBastow, TJen_AU
dc.date.accessioned2010-04-16T06:54:05Zen_AU
dc.date.accessioned2010-04-30T05:08:29Zen_AU
dc.date.available2010-04-16T06:54:05Zen_AU
dc.date.available2010-04-30T05:08:29Zen_AU
dc.date.issued2010-04en_AU
dc.date.statistics2010-04en_AU
dc.description.abstractAnthoinite, AlWO3(OH)3, from the Mt. Misobo Mine, Democratic Republic of the Congo, has triclinic symmetry with cell parameters a = 8.196(1) Å, b = 9.187(1) Å, c = 11.316(1) Å, = 92.82(1)°, β = 94.08(1)°, = 90.23(1)°, space group ґI, Z = 8. The structure was solved by applying ab initio structure solution methods (Reverse Monte Carlo/Simulated Annealing) to both X-ray and neutron powder diffraction data and was refined using the Rietveld method. The structure is built up of two types of M4(O,OH)16 planar tetrameric clusters of edge-sharing octahedra, one containing predominantly Al and the other predominantly W. The Al-rich and W-rich clusters interconnect via corner sharing to form stepped layers parallel to (001). The layers are held together by strong hydrogen bonding. The structure can be described as a rocksalt derivative structure, with the close-packed anion layers parallel to (012), and with Al and W atoms ordered into one third of the octahedral sites within the cubic close-packed anion lattice. The structure is complicated by partial disorder between Al and W in the tetrameric clusters and associated disorder in the H atom sites. Infrared and 27Al MAS NMR results are also presented for anthoinite. © 2010, Mineralogical Society of Americaen_AU
dc.identifier.citationGrey, I. E., Madsen, I. C., Mills, S. J., Hatert, F., Peterson, V. K., & Bastow, T. J. (2010). New type of cubic-stacked layer structure in anthoinite, AlWO3(OH)(3). American Mineralogist, 95(4), 639-645. The Mineralogical Society of America, 3635 Concorde Pkwy Ste 500, Chantilly VA 20151-1125. doi:10.2138/am.2010.3377en_AU
dc.identifier.govdoc1546en_AU
dc.identifier.issn0003-004Xen_AU
dc.identifier.issue4en_AU
dc.identifier.journaltitleAmerican Mineralogisten_AU
dc.identifier.pagination639-645en_AU
dc.identifier.urihttp://dx.doi.org/10.2138/am.2010.3377en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3172en_AU
dc.identifier.volume95en_AU
dc.language.isoenen_AU
dc.publisherMineralogical Society of Americaen_AU
dc.subjectDemocratic Republic of the Congoen_AU
dc.subjectLayersen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectStructure factorsen_AU
dc.subjectHydrogenen_AU
dc.titleNew type of cubic-stacked layer structure in anthoinite, AlWO3(OH)(3)en_AU
dc.typeJournal Articleen_AU
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