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A siereographic construction .for determining the optic axes of a biaxial crystal directly ,from a few extinction measurements

Published online by Cambridge University Press:  14 March 2018

N. Joel
N. Joel*
Affiliation:
Centro de Investigaciones de Cristalografía, Instituto de Física y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, chile
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Summary

It is possible to determine the directions of the optic axes of a biaxial crystal mounted on a spindle stage—and hence the angle 2V and the directions of α, β, γ—from only four measured extinction positions. The method is a generalization of the one proposed by Tocher (1962); but in the present procedure it is not necessary to determine first the optic axial plane.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 264 , March 1964 , pp. 769 - 779
Copyright
Copyright © 1964, The Mineralogical Society

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References

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