Clausthalite


Composition: PbSe
Crystal System : Cubic
Colours: Bluish grey, lead-grey
Lustre : Metallic
Hardness (H) : 2.5-3.0
Specific Gravity (S.G) : 7.8-8.2
References: Gebhard (1999)

Distribution

Extremely rare.

Notable Finds

As tiny crystals in dolomite.