Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/5857
Title: A Raman spectroscopic study of the arsenate mineral chenevixite Cu2Fe23+(AsO4)2(OH)4-H2O.
Authors: Frost, Ray Leslie
López, Andrés
Cipriano, Ricardo Augusto Scholz
Lana, Cristiano de Carvalho
Xi, Yunfei
Keywords: Chenevixite
Luetheite
Arsenate
Raman spectroscopy
Issue Date: 2015
Citation: Frost, R. L. et al. A Raman spectroscopic study of the arsenate mineral chenevixite Cu2Fe23+(AsO4)2(OH)4-H2O. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 135, p. 192-197, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142514009871>. Acesso em: 04 set. 2015.
Abstract: We have studied the mineral chenevixite from Manto Cuba Mine, San Pedro de Cachiyuyo District, Inca de Oro, Chañaral Province, Atacama Region, Chile, using a combination of scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDX) and vibrational spectroscopy. Qualitative chemical analysis shows a homogeneous composition, with predominance of As, Fe, Al, Cu, Fe and Cu. Minor amounts of Si were also observed. Raman spectroscopy complimented with infrared spectroscopy has been used to assess the molecular structure of the arsenate minerals chenevixite. Characteristic Raman and infrared bands of the (AsO4)3_ stretching and bending vibrations are identified and described. The observation of multiple bands in the (AsO4)3_ bending region offers support for the loss of symmetry of the arsenate anion in the structure of chenevixite. Raman bands attributable to the OH stretching vibrations of water and hydroxyl units were analysed. Estimates of the hydrogen bond distances were made based upon the OH stretching wavenumbers.
URI: http://www.repositorio.ufop.br/handle/123456789/5857
metadata.dc.identifier.doi: https://doi.org/10.1016/j.saa.2014.06.091
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: 3701420593640.
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