Gudmundite
Mineral FeSbS
Take care.
- Toxic: Wash your hands after handling it, don't lick or taste it, and don't make dust.
About it
Silver-white to steel grey iron sulfantimonide, the antimony partner of arsenopyrite, often as prisms. Named for Gudmundstorp, Sweden, where it was first found.
- Type
- Mineral
- Group
- Sulfantimonide, arsenopyrite group
- Formula
- FeSbS
- Hardness (Mohs)
- 6
- Specific gravity
- 6.7–6.8
- Streak
- black
- Lustre
- metallic
- Crystal system
- Monoclinic
- Colours
- silver white, steel grey
- Transparency
- opaque
- Cleavage and fracture
- none; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.