Les minéralisations Cu(NiBiUAuAg) d'Ifri (district du Haut Seksaoua,Maroc) : apport de l'étude texturale au débat syngenèse versus épigenèse |
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| Authors: | Luc Barbanson Alain Chauvet Aziz Gaouzi Lakhifi Badra Mohamed Mechiche Jean Claude Touray Sa??d Oukarou |
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| Institution: | 1. Institut des sciences de la Terre d''Orléans (ISTO), université d''Orléans, bât. Géosciences, BP 6759, 45067 Orléans cedex 2, France;2. Département de géologie, université de Meknés, Meknés, Maroc;3. Snarema, Casablanca, Maroc |
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| Abstract: | The Cu ore of Ifri is a chalcopyrite stockwork hosted by Cambrian formations and was until now interpreted as a syngenetic massive sulphide deposit. Textural studies highlight two generations of pyrite early (Py I) and late (Py II) with respect to the regional deformation. The chalcopyrite stockwork overprinted Py II, outlining the epigenetic nature of the Cu mineralization. Regarding the origin of Cu-depositing fluids, the presence in the stockwork paragenesis of an U, W, Sn association and preliminary Pb/Pb dating of a brannerite belonging to this association suggest a contribution of the Tichka granite. To cite this article: L. Barbanson et al., C. R. Geoscience 335 (2003). |
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| Keywords: | cuivre pyrite cisaillement Tardi-Hercynien Haut Atlas Maroc copper pyrite stockwork shearing Late Hercynian High Atlas Morocco |
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