Frost, Ray LeslieLópez, AndrésCipriano, Ricardo Augusto ScholzXi, Yunfei2015-02-252015-02-252014FROST, R. L. et al. Vibrational spectroscopy of the borate mineral tunellite SrB6O9(OH)2 3(H2O) - implications for the molecular structure. Journal of Molecular Structure, v. 1059, p. 40-43, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013008582>. Acesso em: 07 out. 2014.0022-2860http://www.repositorio.ufop.br/handle/123456789/4496Tunellite is a strontium borate mineral with formula: SrB6O9(OH)2_3(H2O) and occurs as colorless crystals in the monoclinic pyramidal crystal system. An intense Raman band at 994 cm_1 was assigned to the BO stretching vibration of the B2O3 units. Raman bands at 1043, 1063, 1082 and 1113 cm_1 are attributed to the in-plane bending vibrations of trigonal boron. Sharp Raman bands observed at 464, 480, 523, 568 and 639 cm_1 are simply defined as trigonal and tetrahedral borate bending modes. The Raman spectrum clearly shows intense Raman bands at 3567 and 3614 cm_1, attributed to OH units. The molecular structure of a natural tunellite has been assessed by using vibrational spectroscopy.en-USRaman spectroscopyBorateTunelliteInfraredEvaporiteArtigo publicado em periodicoO periódico Journal of Molecular Structure concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença 3487790277204.https://doi.org/10.1016/j.molstruc.2013.10.012