- Sphalerite, Bornite, Pyrite, Jamesonite
- Small Cabinet, 6.8 x 6.7 x 3.0 cm
- Estano Orcko mine (Estano Orkho mine), Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosi Department, Bolivia
From the find from about 7 years ago (2002), this is a piece from that great find at the Estano Orcko mine. This small cabinet size specimen features a few good-size, relatively sharp, dark, lustrous, modified dodecahedra of Sphalerite associated with pyritohedral crystals of Pyrite and acicular crystals of Jamesonite. The Sphalerite crystals have a very slight unusual "peacock blue-green" patina which is actually a Bornite "wash" that is seen on practically every specimen from this find.