Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran

Detalhes bibliográficos
Autor(a) principal: Entezari Harsini, A.
Data de Publicação: 2017
Outros Autores: Mazaheri, S. A., Saadat, S., Santos, J. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/21151
Resumo: This paper presents the new geochemical isotopes Sr and Nd, and the mineralization data for the south Neyshabour volcanic rocks located in NE Iran. Based on the chemical classifications, the studied rocks are basaltic trachy andesite, trachy andesite, trachyte, and trachy dacite in composition. All the analyzed volcanic rocks display enrichment in light rare earth elements (LREE) relative to the heavy rare earth elements (HREE), have significant negative Ti and Nb anomalies, and have a positive U anomaly. The tectonic discrimination diagrams for the volcanic rocks in the studied area show a post-collisional arc environment. These characteristics are the specifications of the subduction-related volcanic rocks generated in a post-collisional setting. The initial 87Sr/86Sr ratios ranging from 0.70408 to 0.70593and the εNdi values between +3.34 and +5 for the four samples analyzed indicate that the studied rocks are derived from a lithospheric mantle source. Finally, it is concluded that these volcanic rocks should have formed in a post-collisional environment that followed the Neo-Tethys subduction. There are strong evidence for copper mineralization in these volcanic rocks. The main copper oxide minerals are malachite and atacamite. The copper sulfide minerals such as chalcocite, minor bornite, and covellit are also present. Chalcocite is the most abundant sulfide ore mineral present in this area. This mineralization is observed as open space filling and thin veinlets, and it is partially controlled by linear structures and fault zones. Based on the identified characteristics, this ore deposit is hydrothermal. Carbonate alteration is frequently seen in the area but argillic alteration is very low, and this issue displays a hydrothermal solution with an alkaline pH.
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spelling Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE IranChalcocitePost-Collision Volcanic RocksSr And Nd IsotopesNE IranNeyshbourThis paper presents the new geochemical isotopes Sr and Nd, and the mineralization data for the south Neyshabour volcanic rocks located in NE Iran. Based on the chemical classifications, the studied rocks are basaltic trachy andesite, trachy andesite, trachyte, and trachy dacite in composition. All the analyzed volcanic rocks display enrichment in light rare earth elements (LREE) relative to the heavy rare earth elements (HREE), have significant negative Ti and Nb anomalies, and have a positive U anomaly. The tectonic discrimination diagrams for the volcanic rocks in the studied area show a post-collisional arc environment. These characteristics are the specifications of the subduction-related volcanic rocks generated in a post-collisional setting. The initial 87Sr/86Sr ratios ranging from 0.70408 to 0.70593and the εNdi values between +3.34 and +5 for the four samples analyzed indicate that the studied rocks are derived from a lithospheric mantle source. Finally, it is concluded that these volcanic rocks should have formed in a post-collisional environment that followed the Neo-Tethys subduction. There are strong evidence for copper mineralization in these volcanic rocks. The main copper oxide minerals are malachite and atacamite. The copper sulfide minerals such as chalcocite, minor bornite, and covellit are also present. Chalcocite is the most abundant sulfide ore mineral present in this area. This mineralization is observed as open space filling and thin veinlets, and it is partially controlled by linear structures and fault zones. Based on the identified characteristics, this ore deposit is hydrothermal. Carbonate alteration is frequently seen in the area but argillic alteration is very low, and this issue displays a hydrothermal solution with an alkaline pH.Sharood University of Techology2017-12-13T16:03:33Z2017-01-01T00:00:00Z2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/21151eng2251-859210.22044/jme.2016.766Entezari Harsini, A.Mazaheri, S. A.Saadat, S.Santos, J. F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:39:16Zoai:ria.ua.pt:10773/21151Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:54:47.543850Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
title Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
spellingShingle Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
Entezari Harsini, A.
Chalcocite
Post-Collision Volcanic Rocks
Sr And Nd Isotopes
NE Iran
Neyshbour
title_short Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
title_full Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
title_fullStr Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
title_full_unstemmed Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
title_sort Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
author Entezari Harsini, A.
author_facet Entezari Harsini, A.
Mazaheri, S. A.
Saadat, S.
Santos, J. F.
author_role author
author2 Mazaheri, S. A.
Saadat, S.
Santos, J. F.
author2_role author
author
author
dc.contributor.author.fl_str_mv Entezari Harsini, A.
Mazaheri, S. A.
Saadat, S.
Santos, J. F.
dc.subject.por.fl_str_mv Chalcocite
Post-Collision Volcanic Rocks
Sr And Nd Isotopes
NE Iran
Neyshbour
topic Chalcocite
Post-Collision Volcanic Rocks
Sr And Nd Isotopes
NE Iran
Neyshbour
description This paper presents the new geochemical isotopes Sr and Nd, and the mineralization data for the south Neyshabour volcanic rocks located in NE Iran. Based on the chemical classifications, the studied rocks are basaltic trachy andesite, trachy andesite, trachyte, and trachy dacite in composition. All the analyzed volcanic rocks display enrichment in light rare earth elements (LREE) relative to the heavy rare earth elements (HREE), have significant negative Ti and Nb anomalies, and have a positive U anomaly. The tectonic discrimination diagrams for the volcanic rocks in the studied area show a post-collisional arc environment. These characteristics are the specifications of the subduction-related volcanic rocks generated in a post-collisional setting. The initial 87Sr/86Sr ratios ranging from 0.70408 to 0.70593and the εNdi values between +3.34 and +5 for the four samples analyzed indicate that the studied rocks are derived from a lithospheric mantle source. Finally, it is concluded that these volcanic rocks should have formed in a post-collisional environment that followed the Neo-Tethys subduction. There are strong evidence for copper mineralization in these volcanic rocks. The main copper oxide minerals are malachite and atacamite. The copper sulfide minerals such as chalcocite, minor bornite, and covellit are also present. Chalcocite is the most abundant sulfide ore mineral present in this area. This mineralization is observed as open space filling and thin veinlets, and it is partially controlled by linear structures and fault zones. Based on the identified characteristics, this ore deposit is hydrothermal. Carbonate alteration is frequently seen in the area but argillic alteration is very low, and this issue displays a hydrothermal solution with an alkaline pH.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-13T16:03:33Z
2017-01-01T00:00:00Z
2017
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/21151
url http://hdl.handle.net/10773/21151
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2251-8592
10.22044/jme.2016.766
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sharood University of Techology
publisher.none.fl_str_mv Sharood University of Techology
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instacron_str RCAAP
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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