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Electron-diffraction study of subsidiary maxima of scattered intensity in nepheline

Published online by Cambridge University Press:  14 March 2018

J. D. C. McConnell
J. D. C. McConnell*
Affiliation:
Dept. of Mineralogy and Petrology, Downing Place, Cambridge
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Summary

A detailed electron and X-ray diffraction study of a suite of nephelines from a wide range of paragenetic environments indicates that, in all cases studied, additional weak maxima of scattered intensity are present. Similar intensity maxima have previously been observed and described in an isolated case by Sahama. Thermal treatment at temperatures as low as 200° C causes these maxima to become noticeably diffuse, implying a structural transformation.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 257 , June 1962 , pp. 114 - 124
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1962

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References

Hahn, (T.) and Buerger, (M.J.), 1955.Zeits. Krist., vol. 106, p. 308.Google Scholar
McConnell, (J. D. C.) and Lima-De-Faria, (J.), 1961.Min. Mag., vol. 32, p. 898.Google Scholar
Sahama, (T.G.), 1958.Amer. Min., vol. 43, p. 165.Google Scholar
Smith, (J.V.) and Sahama, (T.G.), 1954.Min. Mag., vol. 30, p. 439.Google Scholar