Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4145
Title: Raman and infrared spectroscopic characterization of beryllonite, a sodium and beryllium phosphate mineral - implications for mineral collectors.
Authors: Frost, Ray Leslie
Xi, Yunfei
Cipriano, Ricardo Augusto Scholz
Belotti, Fernanda Maria
Menezes Filho, Luiz Alberto Dias
Keywords: Spectroscopy
Beryllonite
Pegmatite
Phosphate
Issue Date: 2012
Citation: FROST, R. L. et al. Raman and infrared spectroscopic characterization of beryllonite, a sodium and beryllium phosphate mineral - implications for mineral collectors. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 97, p. 1058-1062, 2012. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142512006889>. Acesso em: 07 out. 2014.
Abstract: The mineral beryllonite has been characterized by the combination of Raman spectroscopy and infrared spectroscopy. SEM–EDX was used for the chemical analysis of the mineral. The intense sharp Raman band at 1011 cm_1, was assigned to the phosphate symmetric stretching mode. Raman bands at 1046, 1053, 1068 and the low intensity bands at 1147, 1160 and 1175 cm_1 are attributed to the phosphate antisymmetric stretching vibrations. The number of bands in the antisymmetric stretching region supports the concept of symmetry reduction of the phosphate anion in the beryllonite structure. This concept is supported by the number of bands found in the out-of-plane bending region. Multiple bands are also found in the in-plane bending region with Raman bands at 399, 418, 431 and 466 cm_1. Strong Raman bands at 304 and 354 cm_1 are attributed to metal oxygen vibrations. Vibrational spectroscopy served to determine the molecular structure of the mineral. The pegmatitic phosphate minerals such as beryllonite are more readily studied by Raman spectroscopy than infrared spectroscopy.
URI: http://www.repositorio.ufop.br/handle/123456789/4145
metadata.dc.identifier.doi: https://doi.org/10.1016/j.saa.2012.07.067
ISSN: 1386-1425
metadata.dc.rights.license: O periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3487240781563.
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