Near Cusco, in the southeast of Peru, copper oxide ores were extracted in nine small-scale historic mines. These deposits host stratiform copper orebodies within the Eocene-Oligocene San Jeronimo Group. One of these deposits, developed by the Tambomachay mine, was chosen for detailed study. The objective was to determine whether this could be classified as a SRHSCD. The methodology included bibliographic research, field work, and petromineralogical and geochemical analyses. A feldspathic greywacke of the San Jeronimo Group, varying from 10 to 90 cm in thickness, hosts ore that is either disseminated predominantly along laminations or within veinlets. The primary minerals are chalcopyrite and bornite, there is also abundant chalcocite, and covellite-digenite replaces chalcocite. The presence of oxide minerals intergrown with the ores, particularly with covellite, chalcocite, and digenite,...