(A) Plane polarized light image of the breccia observed at 1000 m, and (B) the associated cross-polarized light image with the interpretation of the different clasts and veins. (C) Cathodoluminescence image of the same breccia observed in (A) and (B) with its interpretative sketch in (D). (E) Cross-polarized light image of the late calcite veins observed at 1487 m. (F) Cathodoluminescence image of another zone of the same thin section as in (E).