The Rio Mata Cavalo group: The gold mineralization and its origin
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
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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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 |
|
_version_ |
1808128777722527744 |