Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2025-01-06T01:09:12.806Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Garaucohea, (I.)and Wittke, (O.), 1964. Acta Cryst., vol. 17, p. 183.CrossRefGoogle Scholar
Joel, (N.), 1950. Min. Mag., vol. 29, p. 206.Google Scholar
Joel, (N.), 1963. Min. Mag., vol. 33, p. 679.Google Scholar
Joel, (N.), and Garayoochea, (I.), 1957. Acta Cryst., Vol. 10, p. 399.Google Scholar
Joel, (N.), and Muir, (I.D.), 1958. ∼in. Nag., vol. 31, p. 860.Google Scholar
Tocher, (F.E.), 1962. Min. Mag., vol. 33, p. 52.Google Scholar
Wilcox, (R.E.), 1959. Amer. Min.; vol. 44, p. 1272.Google Scholar
Wilcox, (R.E.), 1960. Bull. Geol. Soc. Amer., vol. 71, p. 2003.Google Scholar