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An X-ray examination of mordenite (ptilolite)

Published online by Cambridge University Press:  14 March 2018

C. Waymouth ,
P. C. Thornely  and
W. H. Taylor
C. Waymouth
Affiliation:
Physics Department, College of Technology, Manchester
P. C. Thornely
Affiliation:
Physics Department, College of Technology, Manchester
W. H. Taylor
Affiliation:
Physics Department, College of Technology, Manchester
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Extract

The structures of the fibrous zeolites edingtonite, thomsonite, and natrolite (with scolecite and mesolite) were determined by X-ray methods some years ago, and it was suggested shortly afterwards by M. H. Hey and F. A. Bannister in a private communication to one of us (W.H.T.) that ‘ptilolite’, another zeolite of fibrous habit, might prove to have a similar structure. An X-ray rotation photograph about the needle axis indicated a unit-cell dimension along the needle axis of approximately 7·5 Å., quite different from the axis c 6·6 Å. characteristic of the fibrous zeolites previously examined, and no further examination of ‘ptilolite’ was made at that time. We have now determined the unit cell and space-group of this crystal, and further work is in progress with a view to the complete analysis of the structure. This paper presents an account of the experimental data which we have obtained.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 25 , Issue 163 , December 1938 , pp. 212 - 216
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1938

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References

1. Taylor, W. H. and Jackson, R., Zeits. Krist., 1933, vol. 86, p. 53 (edingtonite). Taylor, W. H., Meek, C. A., and Jackson, W. W., ibid., 1933, vol. 84, p. 373 (thomsonite, natrolite, scolecite, and mesolite). [M.A. 5–354.]Google Scholar
2. Schaller, W. T., Amer. Min., 1932, vol. 17, p. 128. [M.A. 5–147.]Google Scholar
3. Hey, M. H. and Bannister, F. A., Min. Mag., 1934, vol. 23, p. 556.Google Scholar
4. Callisen, K., Meddel. Dansk Geol. For., 1917, vol. 5, no. 7. [M.A. 1–23.]Google Scholar
5.See, for example, Taylor, W. H., Proc. Roy. Soc. London, Ser. A, 1934, vol. 145, pp. 98–100. [M.A. 6–59.]Google Scholar
6.International tables for the determination of crystal structures. 1935, vol. 1, p. 388.Google Scholar
7. D'Achiardi, G., Atti (Mem.) Soc. Toscana Sci. Nat., 1906, vol. 22, p. 157.Google Scholar