Crystal chemistry of boron-containing minerals by single-crystal neutron diffraction

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dc.contributor.authorGatta, GDen_AU
dc.contributor.authorMcIntyre, GJen_AU
dc.date.accessioned2022-04-08T01:04:17Zen_AU
dc.date.available2022-04-08T01:04:17Zen_AU
dc.date.issued2012-11-15en_AU
dc.date.statistics2021-12-20en_AU
dc.description.abstractMany natural and highly stable minerals contain a significantly high amount of boron which makes their synthetic counterparts of interest as potential neutron absorbers or hosts for storage of nuclear waste. Examples include londonite, with ideal formula (Cs,K)Al4Be4(B,Be)12O28, and hambergite, with formula Be2BO3(OH)0.96F0.04. Single-crystal neutron diffraction is well suited to determining the B/Be distribution and the presence or location of H atoms in these minerals but the high neutron attenuation of B requires very short neutron wavelengths and/or crystal volumes that are considerably smaller than those traditionally desired for neutron diffraction. Here we describe the principal novel neutron diffraction techniques that we used to determine the complete crystal structures of londonite and hambergite. For londonite, neutron Laue diffraction on OrientExpress at the Institut Laue-Langevin (ILL), Grenoble, was an efficient way to select a good quality small crystal for further study on the monochromatic diffractometer D9, also at the ILL, at the short wavelength of 0.7058 A from the hot neutron source. For hambergite, neutron Laue diffraction using KOALA at the OPAL reactor at ANSTO, yielded excellent diffraction data within 36 hours from two small crystals, 2 mm3 in volume.en_AU
dc.identifier.citationGatta, G. D., & McIntyre, G. J. (2012). Crystal chemistry of boron-containing minerals by single-crystal neutron diffraction. Presented at AINSE-ANBUG 2012:10th Neutron Scattering Symposium (AANSS); Sydney, NSW (Australia); 7-9 Nov 2012. In 10th AINSE-ANBUG Neutron Scattering Symposium (AANSS) 2012, (pp. 35).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.pagination35en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12960en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineeringen_AU
dc.subjectCrystallographyen_AU
dc.subjectBoronen_AU
dc.subjectCrystalsen_AU
dc.subjectMineralsen_AU
dc.subjectNeutron absorbersen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectRadioactive wastesen_AU
dc.subjectCoherent scatteringen_AU
dc.subjectDiffractionen_AU
dc.subjectElementsen_AU
dc.subjectMaterialsen_AU
dc.subjectRadioactive materialsen_AU
dc.subjectScatteringen_AU
dc.subjectSemimetalsen_AU
dc.subjectWastesen_AU
dc.titleCrystal chemistry of boron-containing minerals by single-crystal neutron diffractionen_AU
dc.typeConference Presentationen_AU
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