A vibrational spectroscopic study of the silicate mineral inesite Ca2(Mn,Fe)7Si10O28(OH)-5H2O.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorFrost, Ray L.-
Autor(es): dc.creatorLópez, Andrés-
Autor(es): dc.creatorXi, Yunfei-
Autor(es): dc.creatorScholz, Ricardo Augusto-
Data de aceite: dc.date.accessioned2019-11-06T13:31:46Z-
Data de disponibilização: dc.date.available2019-11-06T13:31:46Z-
Data de envio: dc.date.issued2015-01-21-
Data de envio: dc.date.issued2015-01-21-
Data de envio: dc.date.issued2014-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/4306-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/557312-
Descrição: dc.descriptionWe have studied the hydrated hydroxyl silicate mineral inesite of formula Ca2(Mn,Fe)7Si10O28(OH)_5H2O using a combination of scanning electron microscopy with EDX and Raman and infrared spectroscopy. SEM analysis shows the mineral to be a pure monomineral with no impurities. Semiquantitative analysis shows a homogeneous phase, composed by Ca, Mn2+, Si and P, with minor amounts of Mg and Fe. Raman spectrum shows well resolved component bands at 997, 1031, 1051, and 1067 cm_1 attributed to a range of SiO symmetric stretching vibrations of [Si10O28] units. Infrared bands found at 896, 928, 959 and 985 cm_1 are attributed to the OSiO antisymmetric stretching vibrations. An intense broad band at 653 cm_1 with shoulder bands at 608, 631 and 684 cm_1 are associated with the bending modes of the OSiO units of the 6- and 8-membered rings of the [Si10O28] units. The sharp band at 3642 cm_1 with shoulder bands at 3612 and 3662 cm_1 are assigned to the OH stretching vibrations of the hydroxyl units. The broad Raman band at 3420 cm_1 with shoulder bands at 3362 and 3496 cm_1 are assigned to the water stretching vibrations. The application of vibrational spectroscopy has enabled an assessment of the molecular structure of inesite to be undertaken.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença 3487791245157.-
Palavras-chave: dc.subjectInesite-
Palavras-chave: dc.subjectSilicate-
Palavras-chave: dc.subjectRaman spectroscopy-
Palavras-chave: dc.subjectInfrared spectroscopy-
Título: dc.titleA vibrational spectroscopic study of the silicate mineral inesite Ca2(Mn,Fe)7Si10O28(OH)-5H2O.-
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