Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)

Detalhes bibliográficos
Autor(a) principal: MAIA, Miguel
Data de Publicação: 2019
Outros Autores: Moreira, Noel, MIRÃO, José, NORONHA, Fernando, NOGUEIRA, Pedro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/27388
Resumo: The ancient Miguel Vacas copper mine belongs to a cluster of ancient Cu mines and occurrences in the Ossa-Morena Zone, specifically in the Sousel-Barrancos metallogenic belt (SBMB), such as Mociços, Ferrarias and Bugalho. This deposit is characterised by an anastomosing vein structure mainly composed of quartz + carbonate + sulphides that extends over 2 km in length with an NNW-SSE direction. Chalcopyrite is the main primary Cu mineralisation; strong supergene enrichment is evidenced by the mineral assemblage of libethenite, malachite, bornite and digenite. Prospects in the area also reveal the presence of arsenopyrite. An epigenetic epithermal model for the Cu mineralisation is proposed for Miguel Vacas, as well as for other SBMB deposits (Mateus et al., 2003). This study aims to the characterisation of the fluids related with the mineralising processes. Sampling was done in a borehole at different depths (eight samples from 53 to 188 m). This study allowed identifying three different FI types regarding their composition.
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spelling Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)Zona de Ossa-MorenaInclusões FluidasMiguel VacasCobreThe ancient Miguel Vacas copper mine belongs to a cluster of ancient Cu mines and occurrences in the Ossa-Morena Zone, specifically in the Sousel-Barrancos metallogenic belt (SBMB), such as Mociços, Ferrarias and Bugalho. This deposit is characterised by an anastomosing vein structure mainly composed of quartz + carbonate + sulphides that extends over 2 km in length with an NNW-SSE direction. Chalcopyrite is the main primary Cu mineralisation; strong supergene enrichment is evidenced by the mineral assemblage of libethenite, malachite, bornite and digenite. Prospects in the area also reveal the presence of arsenopyrite. An epigenetic epithermal model for the Cu mineralisation is proposed for Miguel Vacas, as well as for other SBMB deposits (Mateus et al., 2003). This study aims to the characterisation of the fluids related with the mineralising processes. Sampling was done in a borehole at different depths (eight samples from 53 to 188 m). This study allowed identifying three different FI types regarding their composition.Acta Mineralogica-Petrographica Abstract Series2020-02-27T11:39:26Z2020-02-272019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/27388http://hdl.handle.net/10174/27388engMAIA, M., MOREIRA, N., MIRÃO, J., NORONHA, F., NOGUEIRA, P. (2019), Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal). Acta Mineralogica-Petrographica Abstract Series (ECROFI 2019), vol. 10, 77.mcmaiageo@gmail.comnafm@uevora.ptjmirao@uevora.ptfmnoronh@fc.up.ptpmn@uevora.pt250MAIA, MiguelMoreira, NoelMIRÃO, JoséNORONHA, FernandoNOGUEIRA, Pedroinfo: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:RCAAP2024-01-03T19:22:54Zoai:dspace.uevora.pt:10174/27388Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:17:31.243470Repositório 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 Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
title Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
spellingShingle Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
MAIA, Miguel
Zona de Ossa-Morena
Inclusões Fluidas
Miguel Vacas
Cobre
title_short Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
title_full Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
title_fullStr Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
title_full_unstemmed Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
title_sort Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal)
author MAIA, Miguel
author_facet MAIA, Miguel
Moreira, Noel
MIRÃO, José
NORONHA, Fernando
NOGUEIRA, Pedro
author_role author
author2 Moreira, Noel
MIRÃO, José
NORONHA, Fernando
NOGUEIRA, Pedro
author2_role author
author
author
author
dc.contributor.author.fl_str_mv MAIA, Miguel
Moreira, Noel
MIRÃO, José
NORONHA, Fernando
NOGUEIRA, Pedro
dc.subject.por.fl_str_mv Zona de Ossa-Morena
Inclusões Fluidas
Miguel Vacas
Cobre
topic Zona de Ossa-Morena
Inclusões Fluidas
Miguel Vacas
Cobre
description The ancient Miguel Vacas copper mine belongs to a cluster of ancient Cu mines and occurrences in the Ossa-Morena Zone, specifically in the Sousel-Barrancos metallogenic belt (SBMB), such as Mociços, Ferrarias and Bugalho. This deposit is characterised by an anastomosing vein structure mainly composed of quartz + carbonate + sulphides that extends over 2 km in length with an NNW-SSE direction. Chalcopyrite is the main primary Cu mineralisation; strong supergene enrichment is evidenced by the mineral assemblage of libethenite, malachite, bornite and digenite. Prospects in the area also reveal the presence of arsenopyrite. An epigenetic epithermal model for the Cu mineralisation is proposed for Miguel Vacas, as well as for other SBMB deposits (Mateus et al., 2003). This study aims to the characterisation of the fluids related with the mineralising processes. Sampling was done in a borehole at different depths (eight samples from 53 to 188 m). This study allowed identifying three different FI types regarding their composition.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01T00:00:00Z
2020-02-27T11:39:26Z
2020-02-27
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/27388
http://hdl.handle.net/10174/27388
url http://hdl.handle.net/10174/27388
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MAIA, M., MOREIRA, N., MIRÃO, J., NORONHA, F., NOGUEIRA, P. (2019), Fluid constraints in the Miguel Vacas Cu deposit (Ossa-Morena Zone, Portugal). Acta Mineralogica-Petrographica Abstract Series (ECROFI 2019), vol. 10, 77.
mcmaiageo@gmail.com
nafm@uevora.pt
jmirao@uevora.pt
fmnoronh@fc.up.pt
pmn@uevora.pt
250
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Acta Mineralogica-Petrographica Abstract Series
publisher.none.fl_str_mv Acta Mineralogica-Petrographica Abstract Series
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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
repository.mail.fl_str_mv
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