My sample collection

"Sphalerite"

From: Lime and cement mines of Baulmes (Vaud, Switzerland)
Mineral(s): Sphalerite - (Fe,Zn)S
Age: ? Tertiary-Quaternary ?

Description: Sphalerite may be used as a zinc and iron source (more than 60 weight-percent of Zn+Fe). On this picture sphalerite is growing associated to dolomite veins (not enough material to exploit).