X-Ray examination of aramayoite
Published online by Cambridge University Press: 14 March 2018
Extract
An attempt was made to determine the true symmetry of the cleavage flakes of aramayoite by means of the Laue photographic method. Since X-ray diffraction takes place within the crystal, the lack of welldeveloped faces other than main cleavage faces was no disadvantage. One feature, however, which did prove a difficulty, was the pliability of thin clevage flakes referred to by Dr. Spencer. It was essential that the whole of the main cleavage face upon which the X-ray beam was incident should be strictly perpendicular to that beam. In order to ensure this, only those flakes were used which gave a single optical reflection, and two distinct methods of setting were resorted to. In the first case the slit (circular aperture) was used vertically ; the flat end of the slit system was ground truly perpendicular to the slit itself and was thus horizontal.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 21 , Issue 115 , December 1926 , pp. 163 - 168
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1926
References
page 163 note 1 L. J. Spencer, Aramayoite, a new mineral, from Bolivia. This vol., p. 15.
page 164 note 1 Hull, Cf. A. W. and Davey, W. P., Physical Rev., 1921, vol. 17, p. 549 CrossRefGoogle Scholar.
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