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Rôle du fluor dans la formation des gisements d'émeraude de Mananjary (Est de Madagascar)

Abstract : The Mananjary emerald deposits are hosted in phlogopite-rich rocks formed through metasomatic alteration of meta-ultrabasites (hornblendites) at about 500 °C and 2 kbar due to infiltration of fluoride-rich fluids. A thermodynamic model explains the role of fluoride-complexation in the transport of Be and points to co-precipitation of F-phlogopite as the cause of beryl deposition. To cite this article: B. Moine et al., C. R. Geoscience 336 (2004).
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Submitted on : Friday, April 15, 2022 - 1:50:34 PM
Last modification on : Saturday, June 25, 2022 - 8:53:35 AM

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Bernard Moine, Christian Chan Peng, Alain Mercier. Rôle du fluor dans la formation des gisements d'émeraude de Mananjary (Est de Madagascar). Comptes rendus - Géoscience, 2004, 336, pp.513-522. ⟨10.1016/j.crte.2003.12.013⟩. ⟨insu-03642981⟩

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