Some new occurrences of gonnardite
Published online by Cambridge University Press: 14 March 2018
Summary
This zeolite, hitherto recorded only from Chaux de Bergonne, France, has been found as zoned spherules with thomsonite (var. faroelite), on specimens from Aci Castello and Aci Trezza, Sicily, and Capo di Bove, Rome, from Weilberg, Rhineland, and from Klöch, Styria. Three chemical analyses confirm previous results; optical data suggest some variation in composition within a spherule. There is a striking resemblance between X-ray fibre photographs of gonnardite and of thomsonite, and between X-ray powder photographs of gonnardire and of natrolite. The Klöch occurrence, where the gonnardite is accompanied by phillipsite, is described in detail.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 234 , September 1956 , pp. 265 - 271
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1956
References
References
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