Sample of sphalerite. The principal ore of zinc, sphalerite may be found as isometric tetrahedral crystals or in compact crypotocrystalline masses as seen here. Sphalerite may be found in pegmatitic and geothermal veins, or as a sedimentary replacement deposit. It is also seen in some fine marble. The largest commercial deposits are in the USA, Canada, Australia and Eastern Europe. In addition to zinc, sphalerite may also yield useful amounts of cadmium, gallium and indium.
Model release not required. Property release not required.