Blende variety sphalerite with Dolomites (199)

Blende variety sphalerite with Dolomites saint Laurent le Minier in Gard (France) year 90.

Stone dimensions: H:78mm x W:39mm Weight: 111g (with base)

Chemical Formula: ZnS (Zinc sulfide)

Hardness on Mohs scale: 3.5-4

Density: 3.9 - 4.1 

Sphalerite is the main source of zinc, used in various alloys and in galvanizing to protect iron and steel against corrosion. It is also used in brass production and in certain electronic components. Its crystals are also prized by mineral collectors for their brilliance.