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The vibrational spectra of natural augelite (Al 2 (OH) 3 (PO 4 )) including the infrared at 298 K and Raman spectra at 298 and 77 K have been obtained and related to the crystallography of the mineral. Bands are identified in terms of the fundamental vibrating units namely PO 4 , Al 2 OH and Al 3 OH. The use of infrared and Raman OH stretching wavenumbers...
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