Dickinson, Roscoe G. and Dillon, Robert T. (1929) The Raman Spectrum of Gypsum. Proceedings of the National Academy of Sciences of the United States of America, 15 (9). pp. 695-699. ISSN 0027-8424. http://resolver.caltech.edu/CaltechAUTHORS:DICpnas29b
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In an investigation of the Raman spectra of some ionized substances in aqueous solution, it was found  that the frequency shift given by a solution of potassium carbonate was in fairly close agreement with the strongest shift given by calcite. Data for such a comparison in other cases do not appear to exist, for change of frequency on scattering has been measured for only a few crystalline substances. In addition to calcite [2,3,5], these are quartz [2,3,4,5], ice , and topaz . No modified frequencies were found in the light scattered by halite , NaCl, fluorite , CaF2, or by the salts  LiF and NaF. In the present paper are described the results of measurements on gypsum, CaSO4•2H20, and a comparison of these with data on ammonium sulfate solution.
|Additional Information:||Copyright © 2005 by the National Academy of Sciences Communicated July 27, 1929|
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|Deposited On:||09 Nov 2006|
|Last Modified:||26 Dec 2012 09:16|
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