Files in this item
Defects in sodalite-group minerals determined from X-ray-induced luminescence
Item metadata
dc.contributor.author | Finch, Adrian Anthony | |
dc.contributor.author | Mortensen, Henrik Friis | |
dc.contributor.author | Maghrabi, Mufeed | |
dc.date.accessioned | 2016-05-20T14:30:06Z | |
dc.date.available | 2016-05-20T14:30:06Z | |
dc.date.issued | 2016-07 | |
dc.identifier.citation | Finch , A A , Mortensen , H F & Maghrabi , M 2016 , ' Defects in sodalite-group minerals determined from X-ray-induced luminescence ' , Physics and Chemistry of Minerals , vol. 43 , no. 7 , pp. 481-491 . https://doi.org/10.1007/s00269-016-0816-7 | en |
dc.identifier.issn | 0342-1791 | |
dc.identifier.other | PURE: 242357928 | |
dc.identifier.other | PURE UUID: 35c90dc1-ebb4-4ef8-9e7c-13414046c968 | |
dc.identifier.other | Scopus: 84969262448 | |
dc.identifier.other | ORCID: /0000-0002-3689-1517/work/38002295 | |
dc.identifier.other | WOS: 000379504800002 | |
dc.identifier.uri | https://hdl.handle.net/10023/8844 | |
dc.description | The refurbishment of the RLTLCL system and the establishment of it as a facility at St. Andrews were funded by NERC Grant NE/H002715/1. | en |
dc.description.abstract | The luminescence spectra of a suite of natural sodium framework silicates including four different sodalite variants and tugtupite have been collected during X-ray irradiation as a function of temperature between 20 and 673 K. The origin of the emission bands observed in these samples is attributed to F-centres (360 nm), paramagnetic oxygen defects (400 and 450 nm), S2 − ions (620 nm) and tetrahedral Fe3+ (730 nm). Luminescence in the yellow (550 nm) is tentatively attributed to Mn2+, and red luminescence in Cr-rich pink sodalite is possibly from Cr3+ activation. Sudden reduction in luminescence intensities of emission centres was observed for all minerals in the 60–120 K range. Since it is common to all the sodalite-group minerals, we infer it is a feature of the aluminosilicate framework. Sodalite luminescence has responses from substitutions on the framework (e.g. paramagnetic oxygen defects, Fe3+) which give sodalite properties akin to other framework silicates such as feldspar and quartz. However, the presence of the sodalite cage containing anions (such as F-centres, S2 − ions) imparts additional properties akin to alkali halides. The possibility of coupling between Fe3+ and S2 − is discussed. The overall luminescence behaviour of sodalite group can be understood in terms of competition between these centre types. | |
dc.format.extent | 11 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physics and Chemistry of Minerals | en |
dc.rights | © The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | en |
dc.subject | X-ray excited optical luminescence (XEOL) | en |
dc.subject | Thermoluminescence | en |
dc.subject | Sodalite | en |
dc.subject | Framework silicates | en |
dc.subject | Luminescence | en |
dc.subject | GE Environmental Sciences | en |
dc.subject | NDAS | en |
dc.subject.lcc | GE | en |
dc.title | Defects in sodalite-group minerals determined from X-ray-induced luminescence | en |
dc.type | Journal article | en |
dc.contributor.sponsor | NERC | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. Earth and Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. St Andrews Isotope Geochemistry | en |
dc.identifier.doi | https://doi.org/10.1007/s00269-016-0816-7 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://link.springer.com/article/10.1007%2Fs00269-016-0816-7#SupplementaryMaterial | en |
dc.identifier.grantnumber | NE/H002715/1 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.