Determination of the composition of kalsilites by an X-ray method
Published online by Cambridge University Press: 14 March 2018
Summary
Three new analyses of kalsilite are given, with optical and X-ray data; two (K/(K + Na) = 0·95. 0·98) are from rocks where it is closely associated with nepheline. An analysis of one of the nephelines is also given (K/(K + Na) = 0·31). The cell dimensions vary appreciably with sodium content, and the composition of kalsilite may be determined from the equation:
100 K/(K + Na) = 100−227·27(Δ 6·264),
where Δ is the difference, in degrees, between the diffraction angles 2ϑ for 102 and 101, using Cu-Kα radiation.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 234 , September 1956 , pp. 200 - 208
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1956
References
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