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The effects of heat on the optical orientation of plagioclase felspars

Published online by Cambridge University Press:  14 March 2018

C. T. Barber
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Extract

Aconspicuous feature of all published diagrams, showing the results of the determination of a number of plagioclase felspars by the Fedorov method, is the pronounced scattering of the poles. They lie not only on the curves of the determinative stereogram, but on either side of them, and, in fact, occupy a belt, varying in different instances, and in different positions along the length of the same curve, from 3 to 8 mm. in width. These belts usually contain, but are not symmetrically disposed to, the curves.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 24 , Issue 154 , September 1936 , pp. 343 - 352
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1936

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References

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