Vibrational spectroscopic characterization of the sulphate mineral khademite Al(SO4)F·5(H2O).

Abstract

Vibrational spectroscopy has been used to characterize the sulphate mineral khademite Al(SO4)F·5(H2O). Raman band at 991 cm-1 with a shoulder at 975 cm-1 is assigned to the ν1 (SO4)2- symmetric stretching mode. The observation of two symmetric stretching modes suggests that the sulphate units are not equivalent. Two low intensity Raman bands at 1104 and… (More)
DOI: 10.1016/j.saa.2013.07.020

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