Dims: 1.83x1.11x1.08in (4.65x2.82x2.74cm)
Wt: 1.16oz (33.0g)
Starr Mine, Katanga Province, Congo
Most of one surface of this specimen is covered with cornetite. My loupe reveals that the individual crystals are vitreous and likely transparent, although the color is so deep as to make that difficult to discern. The over-all appearance is slightly dull, and a loupe shows that this is due to many tiny crystals of other minerals including plancheite and malachite. Some areas of the specimen may have additional minerals such as chrysocolla, brochantite, and/or pseudomalachite.