Frost, Ray LeslieLópez, AndrésWang, LinaRomano, Antônio WilsonCipriano, Ricardo Augusto Scholz2016-01-282016-01-282015FROST, R. L. et al. A vibrational spectroscopic study of the silicate mineral harmotome – (Ba,Na,K)1-2(Si,Al)8O16 6H2O – a natural zeolite. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 137, p. 70-74, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142514011536>. Acesso em: 08 set. 2015.1386-1425http://www.repositorio.ufop.br/handle/123456789/6271The mineral harmotome (Ba,Na,K)1-2(Si,Al)8O16 6H2O is a crystalline sodium calcium silicate which has the potential to be used in plaster boards and other industrial applications. It is a natural zeolite with catalytic potential. Raman bands at 1020 and 1102 cm 1 are assigned to the SiO stretching vibrations of three dimensional siloxane units. Raman bands at 428, 470 and 491 cm 1 are assigned to OSiO bending modes. The broad Raman bands at around 699, 728, 768 cm 1 are attributed to water librational modes. Intense Raman bands in the 3100 to 3800 cm 1 spectral range are assigned to OH stretching vibrations of water in harmotome. Infrared spectra are in harmony with the Raman spectra. A sharp infrared band at 3731 cm 1 is assigned to the OH stretching vibration of SiOH units. Raman spectroscopy with complimentary infrared spectroscopy enables the characterization of the silicate mineral harmotome.en-USHarmotomeZeoliteBariumSilicateArtigo 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: 3727590433585.https://doi.org/10.1016/j.saa.2014.07.072