Clausthalite
Mineral PbSe
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Lead-grey selenide like galena but bluer, usually fine-grained or massive. Named for Clausthal in the Harz, Germany.
- Type
- Mineral
- Group
- Selenide, galena group
- Formula
- PbSe
- Hardness (Mohs)
- 2.5–3
- Specific gravity
- 7.6–8.8
- Streak
- greyish black
- Lustre
- metallic
- Crystal system
- Isometric (cubic)
- Colours
- lead grey with a bluish tint
- Transparency
- opaque
- Cleavage and fracture
- perfect cubic
Typical values: real specimens vary. For more, see mindat.org.