Gersdorffite
Mineral NiAsS
Take care.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
About it
Silver-white to grey nickel sulfarsenide, often as small octahedrons, cubes, or pyritohedrons, with a perfect cubic cleavage. Found in nickel-cobalt veins in Ontario, Germany, and Austria.
- Type
- Mineral
- Group
- Sulfarsenide, cobaltite group
- Formula
- NiAsS
- Hardness (Mohs)
- 5.5
- Specific gravity
- 5.9–6.3
- Streak
- greyish black
- Lustre
- metallic
- Crystal system
- Isometric (cubic)
- Colours
- silver white, steel grey
- Transparency
- opaque
- Cleavage and fracture
- perfect cubic; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.