Articles | Volume 35, issue 5
https://doi.org/10.5194/ejm-35-831-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-35-831-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Oct 2023
Research article |
| 04 Oct 2023
| 04 Oct 2023
Very-low-grade phyllosilicates in the Aravis massif (Haute-Savoie, France) and the di-trioctahedral substitution in chlorite
Benoît Dubacq
CORRESPONDING AUTHOR
Institut des Sciences de la Terre
de Paris, ISTeP, UMR 7193, Sorbonne Université, CNRS-INSU, 75005 Paris, France
Guillaume Bonnet
Institut des Sciences de la Terre
de Paris, ISTeP, UMR 7193, Sorbonne Université, CNRS-INSU, 75005 Paris, France
Manon Warembourg
Institut des Sciences de la Terre
de Paris, ISTeP, UMR 7193, Sorbonne Université, CNRS-INSU, 75005 Paris, France
Benoît Baptiste
Institut de Minéralogie, de Physique des Matériaux et de
Cosmochimie, IMPMC, UMR 7590, Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS, 75005 Paris, France
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Short summary
Minerals in a vein network from the Aravis limestone (Haute-Savoie, France) include carbonates, quartz, fluorite and phyllosilicates, crystallized at around 7 km depth and 190 °C. The mineralogy has been studied with emphasis on the chlorite types: chamosite (iron-rich), cookeite (lithium-rich) and sudoite. The presence of the three chlorite types sheds light on their phase diagrams, and observed cationic substitutions confirm the need for more systematic measurement of lithium in chlorite.
Minerals in a vein network from the Aravis limestone (Haute-Savoie, France) include carbonates,...
