Busy specimen with one large sharp, dull lustered chalcocite crystal on small prismatic quartz crystals, partially covered in modified scalenahedral phantomed calcite crystals, with several small patches of acicular mounds od malachite. The quartz crystals are partly coated with microscopic reddish crystals (cuprite ?). Very interesting under magnification. From the Tsumeb Mine, Namibia. Measures 2.25 x 1.75 x 1.5 inches ( 5.7 x 4.4 x 3.8 cm). Zero damage.