Ref.: Bull. Minéral. , 1987, 110, pp. 633-644.
Located South of Salau village, in Haute Vallée du Salat.
Granodiorite and quartz diorite massif (1.2 km2) intruded in Lower/Middle Paleozoic sandstones, pelites and limestones metamorphized into graphitic marbles.
Complex alteration :
- Albitization (replaces granodiorite plagioclases)
- Chloritization (chlorite + sagenite in cleavages replace granodiorite biotites)
- Epidotization (clinozoisite, pyrrhotite and chalcopyrite replacing granodiorite plagioclases and biotite)
- Microclinization (microcline replaces granodiorite plagioclase and quartz after epidotization phase)
- Silicification (quartz, scheelite, arsenopyrite) associated with mylonitization
- Muscovitization
Presence of tension fractures filled with black quartz + arsenopyrite + scheelite or with almandine + hedenbergite.
Presence of inverse shear fractures filled with calcite + quartz + apophyllite + chalcopyrite + galena + sphalerite.
Important contact metamorphism in marbles (diopside, vesuvianite, grossular, tremolite, calcite, clinozoisite and quartz) and metapelites (tremolite, albite, chlorite, clinozoisite and biotite).
Located South of Salau village, in Haute Vallée du Salat.
