Geologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondônia

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dc.contributor.authorDias, Carlos Augusto Tavares [UNESP]
dc.contributor.authorLeite Junior, Washington Barbosa [UNESP]
dc.contributor.authorMuzzolon, Renato
dc.contributor.authorBettencourt, Jorge Silva
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionAVISTAR Engenharia
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2022-04-29T07:14:14Z
dc.date.available2022-04-29T07:14:14Z
dc.date.issued2013-01-01
dc.description.abstractBom 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.en
dc.description.affiliationInstituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SP
dc.description.affiliationDepartamento 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, SP
dc.description.affiliationAVISTAR Engenharia, Avenida Visconde de Guarapuava, 1891, CEP 80060-060. Curitiba, PR
dc.description.affiliationInstituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, Cidade Universitaria. CEP 05508-080. Sao Paulo, SP
dc.description.affiliationUnespInstituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, IGCE/UNESP, Avenida 24-A, 1515, Bela Vista, CEP 13506-900. Rio Claro, SP
dc.description.affiliationUnespDepartamento 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, SP
dc.format.extent731-745
dc.identifier.citationGeociencias, v. 32, n. 4, p. 731-745, 2013.
dc.identifier.issn1980-900X
dc.identifier.issn0101-9082
dc.identifier.scopus2-s2.0-84896299470
dc.identifier.urihttp://hdl.handle.net/11449/227612
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofGeociencias
dc.sourceScopus
dc.subjectBom Futuro Mine
dc.subjectCassiterite
dc.subjectPegmatite
dc.subjectRondônia
dc.subjectTin
dc.titleGeologia e mineralogia do pegmatito estanífero cascavel, mina bom futuro, Rondôniapt
dc.title.alternativeGeology and mineralogy of rattlesnake pegmatite tinny, mine good future, Rondôniaen
dc.typeArtigo

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Artigos - Petrologia e Metalogenia - IGCE