Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4142
Title: Vibrational spectroscopy of the silicate mineral plumbotsumite Pb5(OH)10Si4O8 - an assessment of the molecular structure.
Authors: López, Andrés
Frost, Ray Leslie
Cipriano, Ricardo Augusto Scholz
Gobac, Željka Žigovečki
Xi, Yunfei
Keywords: Plumbotsumite
Molecular structure
Spectroscopy
Issue Date: 2013
Citation: FROST, R. L. et al. Vibrational spectroscopy of the silicate mineral plumbotsumite Pb5(OH)10Si4O8 - an assessment of the molecular structure. Journal of Molecular Structure, v. 1054, p. 228-233, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013008302>. Acesso em: 07 out. 2014.
Abstract: We have used scanning electron microscopy with energy dispersive X-ray analysis to determine the precise formula of plumbotsumite, a rare lead silicate mineral of formula Pb5(OH)10Si4O8. This study forms the first systematic study of plumbotsumite from the Bigadic deposits, Turkey. Vibrational spectroscopy was used to assess the molecular structure of plumbotsumite as the structure is not known. The mineral is characterized by sharp Raman bands at 1047, 1055 and 1060 cm_1 assigned to SiO stretching vibrational modes and sharp Raman bands at 673, 683 and 697 cm_1 assigned to OSiO bending modes. The observation of multiple bands offers support for a layered structure with variable SiO3 structural units. Little information may be obtained from the infrared spectra because of broad spectral profiles. Intense Raman bands at 3510, 3546 and 3620 cm_1 are ascribed to OH stretching modes. Evidence for the presence of water in the plumbotsumite structure was inferred from the infrared spectra.
URI: http://www.repositorio.ufop.br/handle/123456789/4142
metadata.dc.identifier.doi: https://doi.org/10.1016/j.molstruc.2013.09.055
ISSN: 0022-2860
metadata.dc.rights.license: O periódico Journal of Molecular Structure concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3490330555452.
Appears in Collections:DEGEO - Artigos de periódicos

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