Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/227612 |
Resumo: | Bom Futuro Mine is located in the center-north region of Rondônia and it includes two hills named Palanqueta and Bom Futuro and the adjacent flattened areas as well. The main extraction areas of cassiterite occur in the surrounding placers of Bom Futuro hill, also in the primary deposits located in the hill itself. Such primary deposits are restricted to the bodies of pegmatite, which were formed in at least two distinct events. The Cascavel pegmatite belongs to the older event and it is composed by the main lenses and a swarm of dikes, veins and veinlets with NNW/35oENE general attitude. The bodies are massif or zoned and in the main lenses, three distinct zones were recognized under the form of sub-parallel layers among themselves and the walls of the lenses. From the wall to the roof there are: quartz and topaz zone, alkaline feldspar and Li-mica, and granitic zone. The main minerals of Cascavel pegmatite are quartz, alkaline feldspar, topaz, and Li-mica, and the subordinate minerals are cassiterite, sulfides (sphalerite, chalcopyrite, pyrite, galena, stannite), zircon, monazite, wolframite, uraninite, columbite-tantalite, and niobian rutile. The Cascavel pegmatite is a complex rare-element pegmatite belonging to LCT family and is spatially and temporally related to the late-stage peraluminous A-type granites of the Younger Granites of Rondônia. |
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Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, RondôniaGeology and mineralogy of rattlesnake pegmatite tinny, mine good future, RondôniaBom Futuro MineCassiteritePegmatiteRondôniaTinBom Futuro Mine is located in the center-north region of Rondônia and it includes two hills named Palanqueta and Bom Futuro and the adjacent flattened areas as well. The main extraction areas of cassiterite occur in the surrounding placers of Bom Futuro hill, also in the primary deposits located in the hill itself. Such primary deposits are restricted to the bodies of pegmatite, which were formed in at least two distinct events. The Cascavel pegmatite belongs to the older event and it is composed by the main lenses and a swarm of dikes, veins and veinlets with NNW/35oENE general attitude. The bodies are massif or zoned and in the main lenses, three distinct zones were recognized under the form of sub-parallel layers among themselves and the walls of the lenses. From the wall to the roof there are: quartz and topaz zone, alkaline feldspar and Li-mica, and granitic zone. The main minerals of Cascavel pegmatite are quartz, alkaline feldspar, topaz, and Li-mica, and the subordinate minerals are cassiterite, sulfides (sphalerite, chalcopyrite, pyrite, galena, stannite), zircon, monazite, wolframite, uraninite, columbite-tantalite, and niobian rutile. The Cascavel pegmatite is a complex rare-element pegmatite belonging to LCT family and is spatially and temporally related to the late-stage peraluminous A-type granites of the Younger Granites of Rondônia.Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SPDepartamento de Petrologia e Metalogenia, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SPAVISTAR Engenharia, Avenida Visconde de Guarapuava, 1891, CEP 80060-060. Curitiba, PRInstituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, Cidade Universitaria. CEP 05508-080. Sao Paulo, SPInstituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SPDepartamento de Petrologia e Metalogenia, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SPUniversidade Estadual Paulista (UNESP)AVISTAR EngenhariaUniversidade de São Paulo (USP)Dias, Carlos Augusto Tavares [UNESP]Leite Junior, Washington Barbosa [UNESP]Muzzolon, RenatoBettencourt, Jorge Silva2022-04-29T07:14:14Z2022-04-29T07:14:14Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article731-745Geociencias, v. 32, n. 4, p. 731-745, 2013.1980-900X0101-9082http://hdl.handle.net/11449/2276122-s2.0-84896299470Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporGeocienciasinfo:eu-repo/semantics/openAccess2022-04-29T07:14:15Zoai:repositorio.unesp.br:11449/227612Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:26:12.800792Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia Geology and mineralogy of rattlesnake pegmatite tinny, mine good future, Rondônia |
title |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
spellingShingle |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia Dias, Carlos Augusto Tavares [UNESP] Bom Futuro Mine Cassiterite Pegmatite Rondônia Tin |
title_short |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
title_full |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
title_fullStr |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
title_full_unstemmed |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
title_sort |
Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia |
author |
Dias, Carlos Augusto Tavares [UNESP] |
author_facet |
Dias, Carlos Augusto Tavares [UNESP] Leite Junior, Washington Barbosa [UNESP] Muzzolon, Renato Bettencourt, Jorge Silva |
author_role |
author |
author2 |
Leite Junior, Washington Barbosa [UNESP] Muzzolon, Renato Bettencourt, Jorge Silva |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) AVISTAR Engenharia Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Dias, Carlos Augusto Tavares [UNESP] Leite Junior, Washington Barbosa [UNESP] Muzzolon, Renato Bettencourt, Jorge Silva |
dc.subject.por.fl_str_mv |
Bom Futuro Mine Cassiterite Pegmatite Rondônia Tin |
topic |
Bom Futuro Mine Cassiterite Pegmatite Rondônia Tin |
description |
Bom Futuro Mine is located in the center-north region of Rondônia and it includes two hills named Palanqueta and Bom Futuro and the adjacent flattened areas as well. The main extraction areas of cassiterite occur in the surrounding placers of Bom Futuro hill, also in the primary deposits located in the hill itself. Such primary deposits are restricted to the bodies of pegmatite, which were formed in at least two distinct events. The Cascavel pegmatite belongs to the older event and it is composed by the main lenses and a swarm of dikes, veins and veinlets with NNW/35oENE general attitude. The bodies are massif or zoned and in the main lenses, three distinct zones were recognized under the form of sub-parallel layers among themselves and the walls of the lenses. From the wall to the roof there are: quartz and topaz zone, alkaline feldspar and Li-mica, and granitic zone. The main minerals of Cascavel pegmatite are quartz, alkaline feldspar, topaz, and Li-mica, and the subordinate minerals are cassiterite, sulfides (sphalerite, chalcopyrite, pyrite, galena, stannite), zircon, monazite, wolframite, uraninite, columbite-tantalite, and niobian rutile. The Cascavel pegmatite is a complex rare-element pegmatite belonging to LCT family and is spatially and temporally related to the late-stage peraluminous A-type granites of the Younger Granites of Rondônia. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 2022-04-29T07:14:14Z 2022-04-29T07:14:14Z |
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. 32, n. 4, p. 731-745, 2013. 1980-900X 0101-9082 http://hdl.handle.net/11449/227612 2-s2.0-84896299470 |
identifier_str_mv |
Geociencias, v. 32, n. 4, p. 731-745, 2013. 1980-900X 0101-9082 2-s2.0-84896299470 |
url |
http://hdl.handle.net/11449/227612 |
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 |
731-745 |
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_ |
1808129068785205248 |