Aggenys Pb-Zn Mine, Northern Cape Province, South Africa
Minerals
Calcite, Siderite, Sphalerite
Dimensions
9.5 x 7.0 x 5.7 cm
Size class
Cabinet
SID
ML00087
Epimorphs like this are some of the most unusual I've ever seen. The cast is formed by a mix of sphalerite and siderite, while the original calcite crystal is completely etched away.