The Rio Mata Cavalo group: The gold mineralization and its origin

Detalhes bibliográficos
Autor(a) principal: Angeli, Nelson
Data de Publicação: 2011
Outros Autores: Penha, Ulisses Cyrino, Knauer, Luiz Guilherme, Ito, Gabriel Mineo
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/231276
Resumo: The metavolcano-sedimentary sequences, at the southeastern of Espinhaço ridge, present difficulties for distinction of Rio das Velhas Supergroup, till now. Besides of very similarities it is possible to separate the Rio Mata Cavalo Group from the last one. It is constituted by metamafic-ultramafic unit derivated from tholeitic basalts, and a chemical-clastic cover. These sediments present gold and Platinum Group Minerals/Elements associated mainly with Banded Iron Formations. Hydrothermal origin is attributed to noble metals concentration. The prospecting and mineral exploration was done only for gold in the study area. The obtained results permit to suggest the use for an Upper Unit, composed by chemical-clastic sediments, and a Lower Unit, which comprises the volcanic rocks as belonging to Mata Cavalo Group. So, this Group presents in Upper Unit magnetite-rich BIF with gold associated to supergene enrichment.
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spelling The Rio Mata Cavalo group: The gold mineralization and its originO Grupo Rio Mata Cavalo: A mineralização de ouro e sua origemGold mineralizationHydrothermalismMetavolcano-sedimentary sequenceRio Mata Cavalo GroupSoutheastern of Espinhaço RidgeThe metavolcano-sedimentary sequences, at the southeastern of Espinhaço ridge, present difficulties for distinction of Rio das Velhas Supergroup, till now. Besides of very similarities it is possible to separate the Rio Mata Cavalo Group from the last one. It is constituted by metamafic-ultramafic unit derivated from tholeitic basalts, and a chemical-clastic cover. These sediments present gold and Platinum Group Minerals/Elements associated mainly with Banded Iron Formations. Hydrothermal origin is attributed to noble metals concentration. The prospecting and mineral exploration was done only for gold in the study area. The obtained results permit to suggest the use for an Upper Unit, composed by chemical-clastic sediments, and a Lower Unit, which comprises the volcanic rocks as belonging to Mata Cavalo Group. So, this Group presents in Upper Unit magnetite-rich BIF with gold associated to supergene enrichment.Department of Petrology and Metallogeny University of State of São Paulo Campus de Rio Claro, Avenida 24-A, 1515 - Bela Vista, CEP 13506-900. Rio Claro, SPAngloGold Ashanti Brasil Mineração Ltda, Av. Enfermeiro José Caldeira Brant, 200 - Boa Vista, CEP 34000-000. Nova Lima - MGGeosciences Institute Federal University of Minas Gerais, Av. Antônio Carlos, 6.627 - Pampulha, CEP 31270-901. Belo Horizonte - MGUniversity of State of São PauloAngloGold Ashanti Brasil Mineração LtdaUniversidade Federal de Minas Gerais (UFMG)Angeli, NelsonPenha, Ulisses CyrinoKnauer, Luiz GuilhermeIto, Gabriel Mineo2022-04-29T08:44:28Z2022-04-29T08:44:28Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article301-310Geociencias, v. 30, n. 2, p. 301-310, 2011.1980-900X0101-9082http://hdl.handle.net/11449/2312762-s2.0-82555173091Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporGeocienciasinfo:eu-repo/semantics/openAccess2022-04-29T08:44:28Zoai:repositorio.unesp.br:11449/231276Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:14:35.502785Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The Rio Mata Cavalo group: The gold mineralization and its origin
O Grupo Rio Mata Cavalo: A mineralização de ouro e sua origem
title The Rio Mata Cavalo group: The gold mineralization and its origin
spellingShingle The Rio Mata Cavalo group: The gold mineralization and its origin
Angeli, Nelson
Gold mineralization
Hydrothermalism
Metavolcano-sedimentary sequence
Rio Mata Cavalo Group
Southeastern of Espinhaço Ridge
title_short The Rio Mata Cavalo group: The gold mineralization and its origin
title_full The Rio Mata Cavalo group: The gold mineralization and its origin
title_fullStr The Rio Mata Cavalo group: The gold mineralization and its origin
title_full_unstemmed The Rio Mata Cavalo group: The gold mineralization and its origin
title_sort The Rio Mata Cavalo group: The gold mineralization and its origin
author Angeli, Nelson
author_facet Angeli, Nelson
Penha, Ulisses Cyrino
Knauer, Luiz Guilherme
Ito, Gabriel Mineo
author_role author
author2 Penha, Ulisses Cyrino
Knauer, Luiz Guilherme
Ito, Gabriel Mineo
author2_role author
author
author
dc.contributor.none.fl_str_mv University of State of São Paulo
AngloGold Ashanti Brasil Mineração Ltda
Universidade Federal de Minas Gerais (UFMG)
dc.contributor.author.fl_str_mv Angeli, Nelson
Penha, Ulisses Cyrino
Knauer, Luiz Guilherme
Ito, Gabriel Mineo
dc.subject.por.fl_str_mv Gold mineralization
Hydrothermalism
Metavolcano-sedimentary sequence
Rio Mata Cavalo Group
Southeastern of Espinhaço Ridge
topic Gold mineralization
Hydrothermalism
Metavolcano-sedimentary sequence
Rio Mata Cavalo Group
Southeastern of Espinhaço Ridge
description The metavolcano-sedimentary sequences, at the southeastern of Espinhaço ridge, present difficulties for distinction of Rio das Velhas Supergroup, till now. Besides of very similarities it is possible to separate the Rio Mata Cavalo Group from the last one. It is constituted by metamafic-ultramafic unit derivated from tholeitic basalts, and a chemical-clastic cover. These sediments present gold and Platinum Group Minerals/Elements associated mainly with Banded Iron Formations. Hydrothermal origin is attributed to noble metals concentration. The prospecting and mineral exploration was done only for gold in the study area. The obtained results permit to suggest the use for an Upper Unit, composed by chemical-clastic sediments, and a Lower Unit, which comprises the volcanic rocks as belonging to Mata Cavalo Group. So, this Group presents in Upper Unit magnetite-rich BIF with gold associated to supergene enrichment.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
2022-04-29T08:44:28Z
2022-04-29T08:44:28Z
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 Geociencias, v. 30, n. 2, p. 301-310, 2011.
1980-900X
0101-9082
http://hdl.handle.net/11449/231276
2-s2.0-82555173091
identifier_str_mv Geociencias, v. 30, n. 2, p. 301-310, 2011.
1980-900X
0101-9082
2-s2.0-82555173091
url http://hdl.handle.net/11449/231276
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv Geociencias
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 301-310
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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