Frost, Ray LeslieLópez, AndrésGonçalves, Guilherme de OliveiraCipriano, Ricardo Augusto ScholzXi, Yunfei2015-02-272015-02-272014FROST, R. L. et al. A vibrational spectroscopic study of the arsenate mineral bayldonite (Cu,Zn)3Pb(AsO3OH)2(OH)2 - a comparison with other basic arsenates. Journal of Molecular Structure, v. 1056-1057, p. 267-272, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013008764>. Acesso em: 07 out. 2014.0022-2860http://www.repositorio.ufop.br/handle/123456789/4511We have studied the vibrational spectra of the mineral bayldonite, a hydroxy arsenate of copper and lead of formula Cu3Pb(AsO3OH)2(OH)2 from the type locality, the Penberthy Croft Mine, St Hilary, Mount’s Bay District, Cornwall, England and relate the spectra to the mineral structure. Raman bands at 896 and 838 cm_1 are assigned to the ðAsO4Þ3_ m1 symmetric stretching mode and the second to the ðAsO4Þ3_ m3 antisymmetric stretching mode. It is noted that the position of the symmetric stretching mode is at a higher position than the antisymmetric stretching mode. It is proposed that the Raman bands at 889 and 845 cm_1 are symmetric and antisymmetric stretching modes of the (HOAsO3)2_ units. Raman bands of bayldonite at 490 and 500 cm_1 are assigned to the ðAsO4Þ3_ m4 bending modes. Raman bands for bayldonite are noted at 396, 408 and 429 cm_1 and are assigned to the ðAsO4Þ3_ m2 bending modes. A comparison is made with spectra of the other basic copper arsenate minerals, namely cornubite, olivenite, cornwallite.en-USBayldoniteArsenateRaman spectroscopyHydroxylOliveniteArtigo publicado em periodicoO periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença 3487790388907.https://doi.org/10.1016/j.molstruc.2013.10.030