Mineralogical, micromorphological and geochemical evolution of the kaolin facies deposit from the Capim region (northern Brazil).

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSousa, Daniel José Lima de-
Autor(es): dc.creatorVarajão, Angélica Fortes Drummond Chicarino-
Autor(es): dc.creatorJacques, Yvon-
Autor(es): dc.creatorCosta, Geraldo Magela da-
Data de aceite: dc.date.accessioned2025-08-21T15:32:26Z-
Data de disponibilização: dc.date.available2025-08-21T15:32:26Z-
Data de envio: dc.date.issued2017-07-31-
Data de envio: dc.date.issued2017-07-31-
Data de envio: dc.date.issued2007-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/8373-
Fonte completa do material: dc.identifierhttp://www.ingentaconnect.com/contentone/minsoc/cm/2007/00000042/00000001/art00006-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1180/claymin.2007.042.1.06-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1017799-
Descrição: dc.descriptionThe Capim Kaolin District (eastern Brazilian Amazon), is one of the largest kaolin deposits in the world; with the kaolin used mainly for paper coating. The kaolin developed at the expense of Cretaceous sandy-clayey sediments of the Ipixuna formation, through intense lateritization from the Mesozoic to Cenozoic times. This work describes the morphological, mineralogical, crystallochemical and geochemical evolution of the Capim kaolin facies. Based on the profile analysis in the open pit fronts, it encompasses X-ray diffraction, thin-section optical analysis, EDS-assisted scanning electron microscopy and transmission electron microscopy, chemical analysis, infrared and Mo¨ssbauer spectroscopies. Six facies were defined as different stages of the supergene process. Ferruginization led to a thick duricrust on the soft kaolin, which in turn evolved from sandy-clayey sediments of the Ipixuna Formation. A subsequent deferruginization event degraded the duricrust, resulting in the flint kaolin facies.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectKaolinite-
Palavras-chave: dc.subjectFerruginization-
Palavras-chave: dc.subjectDeferruginization-
Palavras-chave: dc.subjectDegradation-
Título: dc.titleMineralogical, micromorphological and geochemical evolution of the kaolin facies deposit from the Capim region (northern Brazil).-
Aparece nas coleções:Repositório Institucional - UFOP

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