Rammelsbergite
Mineral NiAs2
Take care.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
About it
Tin-white to pinkish nickel arsenide, usually massive or radiating, in silver-cobalt-nickel veins such as those of Schneeberg, Saxony, and Cobalt, Ontario.
- Type
- Mineral
- Group
- Arsenide, löllingite group
- Formula
- NiAs2
- Hardness (Mohs)
- 5.5–6
- Specific gravity
- 7–7.2
- Streak
- greyish black
- Lustre
- metallic
- Crystal system
- Orthorhombic
- Colours
- tin white with a pinkish tint
- Transparency
- opaque
- Cleavage and fracture
- distinct; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.