Frost, Ray LeslieLópez, AndrésCipriano, Ricardo Augusto ScholzTheiss, Frederick L.Costa, Geraldo Magela da2015-04-142015-04-142015FROST, R. L. et al. Structural characterization of the borate mineral inyoite – CaB3O3(OH)5_4(H2O). Journal of Molecular Structure, v. 1080, p. 99-104, 2014. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286014009934>. Acesso em: 02 fev. 2015.0022-2860http://www.repositorio.ufop.br/handle/123456789/5085We have studied the mineral Ca(H4B3O7)(OH)_4(H2O) or CaB3O3(OH)5_4(H2O) using electron microscopy and vibrational spectroscopy. The mineral has been characterized by a range of techniques including X-ray diffraction, thermal analysis, electron microscopy with EDX and vibrational spectroscopy. Electron microscopy shows a pure phase and the chemical analysis shows the presence of calcium only. The nominal resolution of the Raman spectrometer is of the order of 2 cm_1 and as such is sufficient enough to identify separate bands for the stretching bands of the two boron isotopes. Raman and infrared bands are assigned to the stretching and bending modes of trigonal and tetrahedral boron and the stretching modes of the hydroxyl and water units. By using a combination of techniques we have characterized the borate mineral inyoite.en-USInyoiteBorateCalciumRaman spectroscopyInfrared spectroscopyArtigo publicado em periodicoO periódico Journal of Molecular Structure concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3577160284297.https://doi.org/10.1016/j.molstruc.2014.09.079