L'aspidolite fluorée : rôle des évaporites dans la genèse du rubis des marbres de Nangimali (Azad-Kashmir,Pakistan) |
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| Authors: | Virginie Garnier Daniel Ohnenstetter Gaston Giuliani |
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| Affiliation: | 1. Centre de recherches pétrographiques et géochimiques, Centre national de la recherche scientifique, 15, rue Notre-Dame-des-Pauvres, BP 20, 54501 Vandoeuvre-lès-Nancy cedex, France;2. URA 154, département « Milieux et Environnement », Institut de recherche pour le développement, 13, rue La Fayette, 75480 Paris cedex 10, France |
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| Abstract: | Ruby-bearing marbles from Nangimali, in the Azad-Kashmir, Pakistan, contain, besides phengite, different mica intergrowths: paragonite, phlogopite and aspidolite (sodium phlogopite). Both phlogopites, intimately linked and coexisting with paragonite, are fluorine rich, contrary to phengite and paragonite. F-enriched aspidolite is described for the first time. Phengite is either associated with phlogopite or could be isolated. The presence of aspidolite in the ruby-bearing marbles, together with other arguments such as salt solid inclusions and presence of anhydrite, suggest the implication of evaporites in the genesis of gem corundums. To cite this article: V. Garnier et al., C. R. Geoscience 336 (2004). |
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| Keywords: | aspidolite (phlogopite sodique) phlogopite paragonite phengite évaporites marbres à rubis Nangimali Pakistan aspidolite (sodium phlogopite) phlogopite paragonite phengite evaporites ruby-bearing marble Nangimali Pakistan |
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