Geochemistry of tourmaline-rich rocks in the Gavião Block, Northern São Francisco craton : implications for its formation.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorFarias, Eliana Marinho Branches-
Autor(es): dc.creatorZincone, Stefano Albino-
Autor(es): dc.creatorSantos , Cláudia dos-
Autor(es): dc.creatorQueiroga, Gláucia Nascimento-
Autor(es): dc.creatorOliveira, Flávia Braga de-
Autor(es): dc.creatorSilva, Gilberto Henrique Tavares Álvares da-
Autor(es): dc.creatorGraça, Leonardo Martins-
Data de aceite: dc.date.accessioned2025-08-21T15:55:52Z-
Data de disponibilização: dc.date.available2025-08-21T15:55:52Z-
Data de envio: dc.date.issued2024-11-17-
Data de envio: dc.date.issued2024-11-17-
Data de envio: dc.date.issued2023-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/18985-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s00710-024-00852-7-
Fonte completa do material: dc.identifierhttps://doi.org/10.1007/s00710-024-00852-7-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1027764-
Descrição: dc.descriptionTourmaline is a valuable forensic mineral that contains a wide range of elemental components capable of reconstructing its geologic evolution. In this study, we developed detailed petrographic and geochemical research on tourmaline-bearing rocks and tourmalinites found surrounding the ca. 3.30 Ga rhyolite of the Gavião Block, northern São Francisco Craton. Two distinct types of mineral assemblages in the tourmaline-bearing rocks are recognized based on the presence of sulfides, oxide minerals, and carbonaceous matter. Along with these tourmaline-bearing rocks, tourmalinite samples are found. The mineral chemistry of tourmalines from the two types of tourmaline-bearing rocks reveals mainly schorl-dravite as tourmaline from a mineral assemblage containing quartz, tourmaline, pyrite, and hematite, and a diverse composition ranging from schorldravite, feruvite-uvite, and schorl-feruvite solid solutions for tourmalines present in the mineral assemblage that contains quartz, pyrite, and carbonaceous matter. The tourmaline composition is essentially foitite-schorl in tourmalinite samples. Most of the metasedimentary rocks studied have felsic and mafic source compositions. The interaction of hydrothermal fluid was crucial for the formation of sulfide and tourmaline minerals. However, distinct tourmaline origins are recognized in tourmaline-rich rocks, pointing out the relevance of sedimentary and metamorphic processes.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectTourmaline-
Palavras-chave: dc.subjectMineral chemistry-
Palavras-chave: dc.subjectNorthern São Francisco craton-
Palavras-chave: dc.subjectPetrogenetic indicator-
Título: dc.titleGeochemistry of tourmaline-rich rocks in the Gavião Block, Northern São Francisco craton : implications for its formation.-
Aparece nas coleções:Repositório Institucional - UFOP

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