violarite
Sign in to saveViolarite (Fe2+Ni23+S4) is a supergene sulfide mineral associated with the weathering and oxidation of primary pentlandite nickel sulfide ore minerals.
Key facts
- Mineral.name
- Violarite
- Mineral.image
- Violarite (49055219618-cropped).jpg
- Mineral.category
- Sulfide mineral Thiospinel group Spinel structural group
- Mineral.formula
- (Fe2+Ni23+S4)
- Mineral.IMAsymbol
- Vio
- Mineral.strunz
- 2.DA.05
- Mineral.system
- Isometric
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Fdm
- Mineral.unit cell
- a = 9.46 Å; Z = 8
via Wikipedia infobox
~4 min read
Encyclopedic overview
4 sectionsContents
- Paragenesis
- Occurrence
- Economic importance
- References
Violarite (Fe2+Ni23+S4) is a supergene sulfide mineral associated with the weathering and oxidation of primary pentlandite nickel sulfide ore minerals.
Violarite crystallises in the isometric system, with a hardness of 4.5 to 5.5 and a specific gravity of about 4, is dark violet grey to copper-red, often with verdigris and patina from associated copper and arsenic sulfides, and is typically in amorphous to massive infill of lower saprolite ultramafic lithologies.
Excerpted from Wikipedia’s “violarite” article, available under the CC BY-SA 4.0 licence.