Title of article :
Structural characterization of the borate mineral inyoite – CaB3O3(OH)5⋅4(H2O)
Author/Authors :
Frost، نويسنده , , Ray L. and Lَpez، نويسنده , , Andrés and Scholz، نويسنده , , Ricardo and Theiss، نويسنده , , Frederick and Costa، نويسنده , , Geraldo Magela da Costa، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2015
Abstract :
We 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.
Keywords :
infrared spectroscopy , Raman spectroscopy , Inyoite , borate , Calcium
Journal title :
Journal of Molecular Structure
Journal title :
Journal of Molecular Structure