The Raman Spectrum of Gypsum
- Creators
- Dickinson, Roscoe G.
- Dillon, Robert T.
Abstract
In an investigation of the Raman spectra of some ionized substances in aqueous solution, it was found [1] 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 [5], and topaz [6]. No modified frequencies were found in the light scattered by halite [2], NaCl, fluorite [5], CaF2, or by the salts [7] 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, 1929Files
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Additional details
- Eprint ID
- 5951
- Resolver ID
- CaltechAUTHORS:DICpnas29b
- Created
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2006-11-09Created from EPrint's datestamp field
- Updated
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2019-10-02Created from EPrint's last_modified field