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Source identification of uranium-containing materials at mine legacy sites in Portugal

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Source identification of uranium-containing materials at mine legacy sites in Portugal. / Keatley, A. C.; Martin, P. G.; Hallam, K. R.; Payton, O. D.; Awbery, R.; Carvalho, F.; Oliveira, J. M.; Silva, L.; Malta, M.; Scott, T. B.

In: Journal of Environmental Radioactivity, Vol. 183, 01.03.2018, p. 102-111.

Research output: Contribution to journalArticle

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Keatley, AC, Martin, PG, Hallam, KR, Payton, OD, Awbery, R, Carvalho, F, Oliveira, JM, Silva, L, Malta, M & Scott, TB 2018, 'Source identification of uranium-containing materials at mine legacy sites in Portugal', Journal of Environmental Radioactivity, vol. 183, pp. 102-111. https://doi.org/10.1016/j.jenvrad.2017.12.009

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Author

Keatley, A. C. ; Martin, P. G. ; Hallam, K. R. ; Payton, O. D. ; Awbery, R. ; Carvalho, F. ; Oliveira, J. M. ; Silva, L. ; Malta, M. ; Scott, T. B. / Source identification of uranium-containing materials at mine legacy sites in Portugal. In: Journal of Environmental Radioactivity. 2018 ; Vol. 183. pp. 102-111.

Bibtex

@article{db818ed3f3dc43fbace4b69521b9fe32,
title = "Source identification of uranium-containing materials at mine legacy sites in Portugal",
abstract = "Whilst prior nuclear forensic studies have focused on identifying signatures to distinguish between different uranium deposit types, this paper focuses on providing a scientific basis for source identification of materials from different uranium mine sites within a single region, which can then be potentially used within nuclear forensics. A number of different tools, including gamma spectrometry, alpha spectrometry, mineralogy and major and minor elemental analysis, have been utilised to determine the provenance of uranium mineral samples collected at eight mine sites, located within three different uranium provinces, in Portugal. A radiation survey was initially conducted by foot and/or unmanned aerial vehicle at each site to assist sample collection. The results from each mine site were then compared to determine if individual mine sites could be distinguished based on characteristic elemental and isotopic signatures. Gamma and alpha spectrometry were used to differentiate between samples from different sites and also give an indication of past milling and mining activities. Ore samples from the different mine sites were found to be very similar in terms of gangue and uranium mineralogy. However, rarer minerals or specific impurity elements, such as calcium and copper, did permit some separation of the sites examined. In addition, classification rates using linear discriminant analysis were comparable to those in the literature.",
keywords = "Forensics, Heterogeneity, Mapping, Mining, Portugal, Radiation, Uranium",
author = "Keatley, {A. C.} and Martin, {P. G.} and Hallam, {K. R.} and Payton, {O. D.} and R. Awbery and F. Carvalho and Oliveira, {J. M.} and L. Silva and M. Malta and Scott, {T. B.}",
year = "2018",
month = "3",
day = "1",
doi = "10.1016/j.jenvrad.2017.12.009",
language = "English",
volume = "183",
pages = "102--111",
journal = "Journal of Environmental Radioactivity",
issn = "0265-931X",
publisher = "Elsevier",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Source identification of uranium-containing materials at mine legacy sites in Portugal

AU - Keatley, A. C.

AU - Martin, P. G.

AU - Hallam, K. R.

AU - Payton, O. D.

AU - Awbery, R.

AU - Carvalho, F.

AU - Oliveira, J. M.

AU - Silva, L.

AU - Malta, M.

AU - Scott, T. B.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Whilst prior nuclear forensic studies have focused on identifying signatures to distinguish between different uranium deposit types, this paper focuses on providing a scientific basis for source identification of materials from different uranium mine sites within a single region, which can then be potentially used within nuclear forensics. A number of different tools, including gamma spectrometry, alpha spectrometry, mineralogy and major and minor elemental analysis, have been utilised to determine the provenance of uranium mineral samples collected at eight mine sites, located within three different uranium provinces, in Portugal. A radiation survey was initially conducted by foot and/or unmanned aerial vehicle at each site to assist sample collection. The results from each mine site were then compared to determine if individual mine sites could be distinguished based on characteristic elemental and isotopic signatures. Gamma and alpha spectrometry were used to differentiate between samples from different sites and also give an indication of past milling and mining activities. Ore samples from the different mine sites were found to be very similar in terms of gangue and uranium mineralogy. However, rarer minerals or specific impurity elements, such as calcium and copper, did permit some separation of the sites examined. In addition, classification rates using linear discriminant analysis were comparable to those in the literature.

AB - Whilst prior nuclear forensic studies have focused on identifying signatures to distinguish between different uranium deposit types, this paper focuses on providing a scientific basis for source identification of materials from different uranium mine sites within a single region, which can then be potentially used within nuclear forensics. A number of different tools, including gamma spectrometry, alpha spectrometry, mineralogy and major and minor elemental analysis, have been utilised to determine the provenance of uranium mineral samples collected at eight mine sites, located within three different uranium provinces, in Portugal. A radiation survey was initially conducted by foot and/or unmanned aerial vehicle at each site to assist sample collection. The results from each mine site were then compared to determine if individual mine sites could be distinguished based on characteristic elemental and isotopic signatures. Gamma and alpha spectrometry were used to differentiate between samples from different sites and also give an indication of past milling and mining activities. Ore samples from the different mine sites were found to be very similar in terms of gangue and uranium mineralogy. However, rarer minerals or specific impurity elements, such as calcium and copper, did permit some separation of the sites examined. In addition, classification rates using linear discriminant analysis were comparable to those in the literature.

KW - Forensics

KW - Heterogeneity

KW - Mapping

KW - Mining

KW - Portugal

KW - Radiation

KW - Uranium

UR - http://www.scopus.com/inward/record.url?scp=85040234902&partnerID=8YFLogxK

U2 - 10.1016/j.jenvrad.2017.12.009

DO - 10.1016/j.jenvrad.2017.12.009

M3 - Article

VL - 183

SP - 102

EP - 111

JO - Journal of Environmental Radioactivity

JF - Journal of Environmental Radioactivity

SN - 0265-931X

ER -