Geology and Metallogenesis of the Sediment-Hosted Cu-Ag Deposit of Tizert (Igherm Inlier, Anti-Atlas Copperbelt, Morocco)

Figure 12

Vertical variation showing the evolution of the mineral paragenesis and the Cu and Ag contents along the Basal Series. There is an evolution in the disseminated mineralization from chalcocite and bornite-rich horizons at the bottom of the siltstones to chalcopyrite and pyrite-rich horizons at the top of the Basal Series. Note also the Cu- and Ag-rich zone at the base of the Tamjout Dolomite due to fracture-hosted sulphide minerals (in decreasing abundance: pyrite, chalcopyrite, chalcocite, and bornite).