Sartorite
Mineral PbAs2S4
Also called Scleroclase
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
About it
Dark lead-grey striated prisms with a brown streak, one of the classic sulfosalts of the Lengenbach quarry in Switzerland's Binn Valley.
- Type
- Mineral
- Group
- Sulfosalt
- Formula
- PbAs2S4
- Hardness (Mohs)
- 3
- Specific gravity
- 5–5.2
- Streak
- chocolate brown
- Lustre
- metallic
- Crystal system
- Monoclinic
- Colours
- dark lead grey
- Transparency
- opaque
- Cleavage and fracture
- good in one direction
Typical values: real specimens vary. For more, see mindat.org.