Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain

Graphite is found dispersed in high-grade metapelitic rocks of the Anatectic Complex of Toledo 15 (ACT) and was mined during the mid twentieth century in places where it has been concentrated 16 (Guadamur and la Puebla de Montalbán mines). Some samples from these mines show variable but 17 significa...

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Detalhes bibliográficos
Autores: Martín-Méndez, Iván, Boixereu, Ester, Villaseca González, Carlos
Formato: artículo
Fecha de publicación:2016
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/23552
Acesso em linha:https://hdl.handle.net/20.500.14352/23552
Access Level:acceso abierto
Palavra-chave:552.3
Graphite
XRD
Raman spectra
Carbon isotopes
Variscan granulites
Petrología
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spelling Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central SpainMartín-Méndez, IvánBoixereu, EsterVillaseca González, Carlos552.3GraphiteXRDRaman spectraCarbon isotopesVariscan granulitesPetrologíaGraphite is found dispersed in high-grade metapelitic rocks of the Anatectic Complex of Toledo 15 (ACT) and was mined during the mid twentieth century in places where it has been concentrated 16 (Guadamur and la Puebla de Montalbán mines). Some samples from these mines show variable but 17 significant alteration intensity, reaching very low-T hydrothermal (supergene) conditions for some 18 samples from the waste heap of the Guadamur site (<100 ºC and 1kbar). Micro-Raman and XRD data 19 indicate that all the studied ACT graphite is of high crystallinity irrespectively of the degree of hydrothermal alteration. Chemical differences were obtained for graphite δ 13 20 C composition. ACT granulitic graphite shows δ 13 21 CPDB values in the range of -20.5 to -27.8‰, indicating a biogenic origin. 22 Interaction of graphite with hydrothermal fluids does not modify isotopic compositions even in the 23 most transformed samples from mining sites. The different isotopic signatures of graphite from the 24 mining sites reflect its contrasted primary carbon source. The high crystallinity of studied graphite 25 makes this area of central Spain suitable for graphitic exploration and its potential exploitation, due to 26 the low carbon content required for its viability and its strategic applications in advanced technologies, 27 such as graphene synthesis.SpringerUniversidad Complutense de Madrid20162016-06-0120162016-06-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/23552reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/235522026-06-02T12:44:21Z
dc.title.none.fl_str_mv Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
title Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
spellingShingle Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
Martín-Méndez, Iván
552.3
Graphite
XRD
Raman spectra
Carbon isotopes
Variscan granulites
Petrología
title_short Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
title_full Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
title_fullStr Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
title_full_unstemmed Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
title_sort Mineralogical and isotopic characterization of graphite 2 deposits from the Anatectic Complex of Toledo, central Spain
dc.creator.none.fl_str_mv Martín-Méndez, Iván
Boixereu, Ester
Villaseca González, Carlos
author Martín-Méndez, Iván
author_facet Martín-Méndez, Iván
Boixereu, Ester
Villaseca González, Carlos
author_role author
author2 Boixereu, Ester
Villaseca González, Carlos
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 552.3
Graphite
XRD
Raman spectra
Carbon isotopes
Variscan granulites
Petrología
topic 552.3
Graphite
XRD
Raman spectra
Carbon isotopes
Variscan granulites
Petrología
description Graphite is found dispersed in high-grade metapelitic rocks of the Anatectic Complex of Toledo 15 (ACT) and was mined during the mid twentieth century in places where it has been concentrated 16 (Guadamur and la Puebla de Montalbán mines). Some samples from these mines show variable but 17 significant alteration intensity, reaching very low-T hydrothermal (supergene) conditions for some 18 samples from the waste heap of the Guadamur site (<100 ºC and 1kbar). Micro-Raman and XRD data 19 indicate that all the studied ACT graphite is of high crystallinity irrespectively of the degree of hydrothermal alteration. Chemical differences were obtained for graphite δ 13 20 C composition. ACT granulitic graphite shows δ 13 21 CPDB values in the range of -20.5 to -27.8‰, indicating a biogenic origin. 22 Interaction of graphite with hydrothermal fluids does not modify isotopic compositions even in the 23 most transformed samples from mining sites. The different isotopic signatures of graphite from the 24 mining sites reflect its contrasted primary carbon source. The high crystallinity of studied graphite 25 makes this area of central Spain suitable for graphitic exploration and its potential exploitation, due to 26 the low carbon content required for its viability and its strategic applications in advanced technologies, 27 such as graphene synthesis.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-06-01
2016
2016-06-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/23552
url https://hdl.handle.net/20.500.14352/23552
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 Springer
publisher.none.fl_str_mv Springer
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 15,301629

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