Delafossite is a copper iron oxide mineral with formula CuFeO₂ or Cu¹⁺Fe³⁺O₂. It is member of the delafossite mineral group with a general formula ABO₂, a group characterized by a sheet of linearly coordinated A cations stacked between edge-shared octahedral layers (BO₆). Delafossite along with other minerals of the ABO₂ group has been recognized for its electrical properties from insulation to metallic conduction. Delafossite is usually a secondary mineral that crystallizes near oxidized copper and is rarely a primary mineral.