Th- and U-bearing minerals in the SE Mediterranean margin of Spain

This paper presents the first specific study of the Th- and U-bearing minerals, which were recently found in the SE Mediterranean margin of Spain (El Hoyazo area, Almería province). These minerals are REE phosphates (mainly monazite) which occur as amoeboidal-to-elongate inclusions, from around 10 µm...

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Authors: Martínez Frías, Jesús, Lunar Hernández, María Del Rosario, Benito, R.
Format: article
Publication Date:2004
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/128808
Online Access:https://hdl.handle.net/20.500.14352/128808
Access Level:Open access
Keyword:549(460.358)
Mineralogía (Geología)
2506.11 Mineralogía
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oai_identifier_str oai:docta.ucm.es:20.500.14352/128808
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spelling Th- and U-bearing minerals in the SE Mediterranean margin of SpainMartínez Frías, JesúsLunar Hernández, María Del RosarioBenito, R.549(460.358)Mineralogía (Geología)2506.11 MineralogíaThis paper presents the first specific study of the Th- and U-bearing minerals, which were recently found in the SE Mediterranean margin of Spain (El Hoyazo area, Almería province). These minerals are REE phosphates (mainly monazite) which occur as amoeboidal-to-elongate inclusions, from around 10 µm to 120 µm, hosted in single garnet crystals from dacite lavas and metamorphic rocks from the El Hoyazo Volcanic Complex. Th and U contents are higher than 1 wt%, with 3.04 to 5.62 wt % for ThO2, and 0.7 to 1.75 wt% for UO2. Both elements are also found in xenotime (ThO2: 0.24, UO2: 0.27 wt%). Given that the erosion of the volcanic source rocks has generated a "placer-type" deposit of monazite sands and that garnets (main carriers of monazite) are being commercialised, an environmental monitoring and management plan should be urgently executed in the area.International Union of Geological SciencesUniversidad Complutense de Madrid20042004-01-0120042004-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/128808reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1288082026-06-02T12:44:21Z
dc.title.none.fl_str_mv Th- and U-bearing minerals in the SE Mediterranean margin of Spain
title Th- and U-bearing minerals in the SE Mediterranean margin of Spain
spellingShingle Th- and U-bearing minerals in the SE Mediterranean margin of Spain
Martínez Frías, Jesús
549(460.358)
Mineralogía (Geología)
2506.11 Mineralogía
title_short Th- and U-bearing minerals in the SE Mediterranean margin of Spain
title_full Th- and U-bearing minerals in the SE Mediterranean margin of Spain
title_fullStr Th- and U-bearing minerals in the SE Mediterranean margin of Spain
title_full_unstemmed Th- and U-bearing minerals in the SE Mediterranean margin of Spain
title_sort Th- and U-bearing minerals in the SE Mediterranean margin of Spain
dc.creator.none.fl_str_mv Martínez Frías, Jesús
Lunar Hernández, María Del Rosario
Benito, R.
author Martínez Frías, Jesús
author_facet Martínez Frías, Jesús
Lunar Hernández, María Del Rosario
Benito, R.
author_role author
author2 Lunar Hernández, María Del Rosario
Benito, R.
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 549(460.358)
Mineralogía (Geología)
2506.11 Mineralogía
topic 549(460.358)
Mineralogía (Geología)
2506.11 Mineralogía
description This paper presents the first specific study of the Th- and U-bearing minerals, which were recently found in the SE Mediterranean margin of Spain (El Hoyazo area, Almería province). These minerals are REE phosphates (mainly monazite) which occur as amoeboidal-to-elongate inclusions, from around 10 µm to 120 µm, hosted in single garnet crystals from dacite lavas and metamorphic rocks from the El Hoyazo Volcanic Complex. Th and U contents are higher than 1 wt%, with 3.04 to 5.62 wt % for ThO2, and 0.7 to 1.75 wt% for UO2. Both elements are also found in xenotime (ThO2: 0.24, UO2: 0.27 wt%). Given that the erosion of the volcanic source rocks has generated a "placer-type" deposit of monazite sands and that garnets (main carriers of monazite) are being commercialised, an environmental monitoring and management plan should be urgently executed in the area.
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01
2004
2004-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/128808
url https://hdl.handle.net/20.500.14352/128808
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv International Union of Geological Sciences
publisher.none.fl_str_mv International Union of Geological Sciences
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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