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The stereographic projection: a procedural revision in crystallography

Published online by Cambridge University Press:  14 March 2018

M. J. Oppenheim
M. J. Oppenheim*
Affiliation:
Department of Geology, The Hebrew University of Jerusalem, Israel
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Summary

Objections are raised to the custom of reversing the pole of projection when dealing with lower crystal faces, for some points so projected no longer retain their natural interangular relations. Instead, lower face normals may be replaced by their antipodal points; these antipodal points are then projected in the usual manner, with suitable symbols. The resultant stereographic projection not only portrays all crystal faces within the primitive circle but is also strictly angle-true.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 263 , December 1963 , pp. 697 - 700
Copyright
Copyright © 1963, The Mineralogical Society

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