Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4157
Title: Infrared and Raman spectroscopic characterization of the silicate-carbonate mineral carletonite - KNa4Ca4Si8O18(CO3)4(OH,F) H2O.
Authors: Frost, Ray Leslie
Xi, Yunfei
Cipriano, Ricardo Augusto Scholz
López, Andrés
Belotti, Fernanda Maria
Keywords: Carletonite
Carbonate
Infrared
Raman spectroscopy
Mount Saint-Hilaire
Issue Date: 2013
Citation: FRST, R. L. et al. Infrared and Raman spectroscopic characterization of the silicate-carbonate mineral carletonite - KNa4Ca4Si8O18(CO3)4(OH,F) H2O. Journal of Molecular Structure, v. 1042, p. 1 - 7, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013002585>. Acesso em: 07 out. 2014.
Abstract: An assessment of the molecular structure of carletonite a rare phyllosilicate mineral with general chemical formula given as KNa4Ca4Si8O18(CO3)4(OH,F).H2O has been undertaken using vibrational spectroscopy. Carletonite has a complex layered structure. Within one period of c, it contains a silicate layer of composition NaKSi8O18 H2O, a carbonate layer of composition NaCO3 0.5H2O and two carbonate layers of composition NaCa2CO3(F,OH)0.5. Raman bands are observed at 1066, 1075 and 1086 cm 1. Whether these bands are due to the CO2 3 m1 symmetric stretching mode or to an SiO stretching vibration is open to question. Multiple bands are observed in the 300–800 cm 1 spectral region, making the attribution of these bands difficult. Multiple water stretching and bending modes are observed showing that there is much variation in hydrogen bonding between water and the silicate and carbonate surfaces.
URI: http://www.repositorio.ufop.br/handle/123456789/4157
metadata.dc.identifier.doi: https://doi.org/10.1016/j.molstruc.2013.03.036
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: 3490330493153.
Appears in Collections:DEGEO - Artigos de periódicos

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