Effect of heat treatment on tourmaline from Brazil.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorCastañeda, Cristiane-
Autor(es): dc.creatorEeckhout, Sigrid G.-
Autor(es): dc.creatorCosta, Geraldo Magela da-
Autor(es): dc.creatorBotelho, Nilson Francisquini-
Autor(es): dc.creatorGrave, Eddy De-
Data de aceite: dc.date.accessioned2025-08-21T15:26:21Z-
Data de disponibilização: dc.date.available2025-08-21T15:26:21Z-
Data de envio: dc.date.issued2017-05-25-
Data de envio: dc.date.issued2017-05-25-
Data de envio: dc.date.issued2006-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/7807-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s00269-006-0067-0-
Fonte completa do material: dc.identifierhttps://doi.org/10.1007/s00269-006-0067-0-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1014742-
Descrição: dc.descriptionThe crystal-chemical behaviour of tourmaline from Arac¸uaı´, Minas Gerais state, Brazil, when subjected to heating in air atmosphere has been studied by several techniques, including EMPA, UV–Vis, TGA, and Mo¨ ssbauer spectroscopy. The tourmaline samples are typically intermediate members of the elbaite-schorl series. The origin of colour and of its change after treatment has been discussed in terms of local disorder, presence of metal transition elements, oxidation of ferrous iron at the octahedral site, and simultaneous trap of the excess electron. These findings may be used to enhance the colour in tourmaline crystals or generate wanted colour changes.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectTourmaline-
Palavras-chave: dc.subjectCrystal chemistry-
Palavras-chave: dc.subjectHeat treatment-
Palavras-chave: dc.subjectColour-
Título: dc.titleEffect of heat treatment on tourmaline from Brazil.-
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