A level of Pb, Zn, Cu and Ba of sedimentary origin associated with intraformational breccias and metaconglomerates occurs within a metasedimentary rock sequence represented by micaschists, calcoschists, limestones and quartzites. Metaigneous rocks, characterized as granodioritic orthogneiss and amphibolites, are intercalated within this sucession. General tectonism related to regional metamorphism gave rise, at the district level, to folding and the formation of cataclastic belts in micaschists and orthogneiss rocks, with the local formation of filonites, and recrystallization of tourmaline, epidote and biotite. A second Cu-mineralized level is situated at a lower level, at the transition from clastic to chemical sedimentary, facies. Galena, sphalerite, chalcopyrite, pyrite, pyrrhotite, cerussite, smithsonite, pyromorphite, goethite, magnetite, barite and the host calcoschist make up the ore and gangue minerals. Pyrite and chalcopyrite show two distinct generations. Stratigraphic, geochemical, lithologic and paleogeographic "metalotectes" represent the most useful tool for prospection of sedimentary syngenetic deposits in the vale do Ribeira.
