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Field aspect and metasomatic rocks of the crust-mantle detachment at the site of sample URD9-1. A. Contact between mantle rocks and the albitite-like sample URD9-1. B. Chlorite-albite assemblage with a granitoid aspect. C. Layered quartz-chlorite-micas vein border. The green micas are Cr-rich muscovites (fuchsites). D. Quartz and iron oxide association in a vein (loose block at Soum d’Unars). E. Chlorite-albite assemblage with a granitoid aspect. F. Interior of quartz vein showing ghosts of centimeter-sized pyrites now replaced by limonite.
Les roches métasomatiques sur le site de l’échantillon URD9-1 (vues de terrain).
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