This tetrahedrite is from the Huaron Mining District of the Huallay District, Pasco Department, Peru. This area contains at least 15 mines including the Alimon which is where most specimens from this district come from. The mines contain over three-hundred different minerals including tetrahedrite. It is a sulfide that contains the elements Cu, Sb and S. This specimen consists of a recrystallized galena matrix that is topped on the display surface with silver tetrahedrite crystals, galena crystals, minor quartz, pyrite and chalcopyrite. The tetrahedrites have well defined morphology and metallic luster. The base or galena side of the matrix contains healed cleavages, hoppered and stair step crystals. This piece measures 3 3/8 x 2 x 1 1/2 inches or 87 x 50 x 38 mm. It weighs 1.2 pounds.