A former name for tetrahedrite, an isometric mineral, (Cu,Fe)₁₂Sb₄S₁₃, having copper replaced by zinc, lead, mercury, cobalt, nickel, or silver; forms a series with tennantite and freibergite; metallic; crystallizes in tetrahedra; occurs in hydrothermal veins and contact metamorphic deposits; a source of copper and other metals.