Photos of El Cura drillcore: A: EC072 fine grained chalcopyrite crystals occur in association with hydrothermal quartz veins. B: EC076 Fine grained massive sulphide with pyritic matrix and millimetric veinlets rich in sphalerite and galena, locally containing disseminated chalcopyrite along microfractures. C: EC078 Banded polymetallic sulphide with layers of sphalerite galena–chalcopyrite within a felsic tuff.
Photos of El Cura drillcore: A: EC072 fine grained chalcopyrite crystals occur in association with hydrothermal quartz veins. B: EC076 Fine grained massive sulphide with pyritic matrix and millimetric veinlets rich in sphalerite and galena, locally containing disseminated chalcopyrite along microfractures. C: EC078 Banded polymetallic sulphide with layers of sphalerite galena–chalcopyrite within a felsic tuff.