Zoned Margarite from the Badshot Formation (Cambrian) near Kaslo, British Columbia
- 1 September 1971
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Earth Sciences
- Vol. 8 (9) , 1145-1147
- https://doi.org/10.1139/e71-100
Abstract
Electron microprobe analysis of margarite crystals shows that they are zoned from Ca1.13Na0.74K0.05(Al4.01Ti0.02Fe0.13Mg0.05)[Si4.78Al3.12O20](OH)4 in their centers to Ca1.63Na0.26K2.005 (Al3.98Ti0.02Fe0.13Mg0.05)[Si4.10Al3.90O20](OH)4 at their margins. The crystals occur in the disequilibrium assemblage calcite – phengite (2M1) – margarite – quartz – kaolinite – epidote –apatite found in Badshot marble from the almandine garnet zone of regional metamorphism.Keywords
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