Location of atoms in hydronium and ammoniojarosite

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dc.contributor.authorSpratt, HJen_AU
dc.contributor.authorRintoul, Len_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorMartens, WNen_AU
dc.date.accessioned2021-07-27T02:25:11Zen_AU
dc.date.available2021-07-27T02:25:11Zen_AU
dc.date.issued2012-11-09en_AU
dc.date.statistics2021-07-26en_AU
dc.descriptionHard copy held by ANSTO Library at DDC 539.758/9en_AU
dc.description.abstractThe jarosite group of minerals have the general formula AB3(SO4)2(OH)6 and belong to the alunite supergroup. For jarosites the B site is iron (F3+) and for alunites the B site is aluminium (Al3+) Hydronium and ammoniojarosites have the hydronium (H30+) and ammonium (NH4+) cations at the A site. The crystal structure of most jarosites is space group R-3m (166), Z = 3 with the A site possessing D3d symmetry. However, H30+ and NH4++, are C3V and Td ions respectively and as such, have no inversion centre, yet the oxygen and nitrogen atoms are commonly located at an inversion centre, the D3d site. Wills and Harrison refined the hydronium oxygen at a lower symmetry C3V site, but no justification was given. To date, the NH4+ and H3Oh hydrogen atoms remain elusive and the geometry of these ions has not been determined. In addition, the possibility of a lower symmetry space group has not been investigated. A recent neutron powder diffraction study of hydronium and ammoniojarosites and also the corresponding alunites at room and low temperatures aims to resolve the H30+. and NH4+ structure and geometry.en_AU
dc.identifier.citationSpratt, H., Rintoul, L., Avdeev, M., & Martens, W. (2012). Location of atoms in hydronium and ammoniojarosite. Paper presented at 10th AINSE-ANBUG Neutron Scattering Symposium (AANSS), Sydney, NSW, Australia, 7-9 November.en_AU
dc.identifier.conferenceenddate9 November 2012en_AU
dc.identifier.conferencename10th AINSE-ANBUG Neutron Scattering Symposium (AANSS)en_AU
dc.identifier.conferenceplaceSydney, NSW, Australiaen_AU
dc.identifier.conferencestartdate7 November 2012en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11094en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineeringen_AU
dc.subjectAluminiumen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectAluniteen_AU
dc.subjectAtomsen_AU
dc.subjectIronen_AU
dc.subjectMineralsen_AU
dc.subjectOxonium ionsen_AU
dc.titleLocation of atoms in hydronium and ammoniojarositeen_AU
dc.typeConference Abstracten_AU
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