Electron microprobe and Raman spectroscopic investigation of monazite from chromitites of Cedrolina (Goias State, Brazil)

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dc.contributor.authorZaccarini, Federica
dc.contributor.authorPortella, Yuri de M. [UNESP]
dc.contributor.authorBakker, Ronald J.
dc.contributor.authorAngeli, Nelson [UNESP]
dc.contributor.authorGaruti, Giorgio
dc.contributor.authorThalhammer, Oskar A. R.
dc.contributor.institutionUniv Leoben
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:17:20Z
dc.date.available2014-05-20T14:17:20Z
dc.date.issued2012-04-01
dc.description.abstractMonazite from chromitites of Cedrolina (Goias State, Brazil) was investigated by electron microprobe and Raman spectroscopy. Monazite has been rarely encountered in chromitites. In Brazil, it was previously reported from chromitites of the Campo Formoso layered intrusion. Comparison between the two occurrences indicates similar morphology and textural characteristics, but remarkable differences in chemical composition. In both cases, monazite occurs as irregular grains (up to 200 mu m) preferentially located in the chlorite-serpentine matrix of the chromitite, more rarely included in chromite. However, the monazite from Cedrolina is characterized by higher Ce/La ratio, and Pr, Nd, Th contents, compared with the monazite from Campo Formoso. The obtained Raman spectra are very similar in the two cases, suggesting that the compositional variation of monazites and the spectral resolution of the Raman do not allow a conclusive chemical analysis with Raman spectra. Textural evidence indicates that, in both occurrences, monazite precipitation did not take place at high temperature, concomitantly with the host chromitite. In the Campo Formoso chromitites, precipitation of monazite has been related with percolation of hydrothermal, aqueous and acid fluids emanating from a granite batholith. on the contrary, the Cedrolina monazite probably formed during one of the metamorphic events that affected the area in which the host chromitite occurs.en
dc.description.affiliationUniv Leoben, Dept Appl Geosci & Geophys, A-8700 Leoben, Austria
dc.description.affiliationSão Paulo State Univ, UNESP, Dept Petrol & Metallogeny, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Dept Petrol & Metallogeny, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent207-215
dc.identifierhttp://dx.doi.org/10.1127/0077-7757/2012/0220
dc.identifier.citationNeues Jahrbuch Fur Mineralogie-abhandlungen. Stuttgart: E Schweizerbartsche Verlags, v. 189, n. 2, p. 207-215, 2012.
dc.identifier.doi10.1127/0077-7757/2012/0220
dc.identifier.issn0077-7757
dc.identifier.lattes0864918679971906
dc.identifier.urihttp://hdl.handle.net/11449/25194
dc.identifier.wosWOS:000303482700008
dc.language.isoeng
dc.publisherE Schweizerbart'sche Verlags
dc.relation.ispartofNeues Jahrbuch Fur Mineralogie-abhandlungen
dc.relation.ispartofjcr0.614
dc.relation.ispartofsjr0,307
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmonaziteen
dc.subjectchromititeen
dc.subjectCedrolinaen
dc.subjectBrazilen
dc.subjectRamanen
dc.subjectelectron microprobeen
dc.subjectmetamorphismen
dc.subjectPilar de Goias greenstone belten
dc.titleElectron microprobe and Raman spectroscopic investigation of monazite from chromitites of Cedrolina (Goias State, Brazil)en
dc.typeArtigo
dcterms.licensehttp://www.schweizerbart.de/journals/metz/instructions
dcterms.rightsHolderE Schweizerbartsche Verlags
unesp.author.lattes0864918679971906
unesp.author.orcid0000-0001-9427-2784[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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Artigos - Petrologia e Metalogenia - IGCE