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The possible axes of crystal-symmetry
Published online by Cambridge University Press: 14 March 2018
Extract
The following is a simple general proof that, on the hypothesis that crystals have a homogeneous cellular structure, the only possible axes of symmetry are those with cyclic numbers 2, 3, 4, or 6.
According to this hypothesis, every crystal is entirely made up of minute space-partitions or ceils, which (apart from those of purely surface layers) have all the same form, size, internal configuration, orientation, and external relations. Accordingly, every point in one cell has an equivalent point exactly corresponding to it in every other cell.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 18 , Issue 86 , May 1919 , pp. 324 - 326
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1919
References
1 This would include an axis traversing a plane forming part of the cell boundary.