Pentlandite
Mineral (Ni,Fe)9S8
About it
Bronze-yellow nickel ore, usually as grains and flames in pyrrhotite; unlike pyrrhotite it is not magnetic. The main nickel mineral at Sudbury, Ontario, and Norilsk, Russia.
- Type
- Mineral
- Group
- Sulfide, pentlandite group
- Formula
- (Ni,Fe)9S8
- Hardness (Mohs)
- 3.5–4
- Specific gravity
- 4.6–5
- Streak
- light bronze brown
- Lustre
- metallic
- Crystal system
- Isometric (cubic)
- Colours
- light bronze yellow
- Transparency
- opaque
- Cleavage and fracture
- none; octahedral parting, conchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.