The mineralogy of the potassium–barium feldspar series
I. The determination of the optical properties of natural members
Published online by Cambridge University Press: 14 March 2018
Summary
Variation diagrams for the optic properties and densities of natural specimens within the series have been determined. They focus attention on two composition regions at about 45 % Cn and 65 % Cn. The significance of the first of these is uncertain, but it is suggested that the discontinuity at 65 % Cn is related to structural changes that take place at this composition.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 271 , September 1965 , pp. 508 - 518
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1965
References
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