Lantanita de Curitiba, Paraná

Lantanita de Curitiba, Paraná

dc.creatorCoutinho, J. Moacyr V.
dc.date1955-12-17
dc.date.accessioned2022-12-15T20:58:05Z
dc.date.available2022-12-15T20:58:05Z
dc.identifierhttps://ppegeo.igc.usp.br/index.php/bffcluspmineralogia/article/view/10750
dc.identifier10.11606/bmffclusp.v0i13.121468
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5362930
dc.descriptionMinute am ethystine crystals of lanthanite w ere found covering fissure, surfaces of carbonate concretions in sedimentary pleistocene rocks at Curitiba, State of Paraná. The crystals show platy (001) habit, bounded by very narrow (100) (010) (110) and (111) faces. B esides m icaceous (001) cleavage,, tw o other parting (? ) directions w ere also observed. The crystals are invariably twinned according to (110) plane. Four pairs cross groups are common. Optical data are given . Some amount of rare earths of the cerium group m ay have been concentrated into ashes through prolonged plant decay. The lanthanite crystals would be the result of extration of lanthanum from ionic soil solutions, fixation on the surfaces of som e colloidal body (p silom elane in case) and final crystallizationen-US
dc.formatapplication/pdf
dc.languagepor
dc.publisherUniversidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanaspt-BR
dc.relationhttps://ppegeo.igc.usp.br/index.php/bffcluspmineralogia/article/view/10750/10226
dc.rightsDireitos autorais 2016 Boletim. Mineralogia - Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulopt-BR
dc.sourceBoletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo. Mineralogia; n. 13 (1955); 119-126pt-BR
dc.source0372-4824
dc.titleLantanita de Curitiba, Paranáen-US
dc.titleLantanita de Curitiba, Paranápt-BR
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeArtigo Avaliado pelos Parespt-BR


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