Alabandite
Mineral MnS
About it
Black manganese sulfide with a distinctive green streak, usually massive in manganese-rich silver veins. Fine crystals come from Uchucchacua, Peru.
- Type
- Mineral
- Group
- Sulfide, galena group
- Formula
- MnS
- Hardness (Mohs)
- 3.5–4
- Specific gravity
- 4–4.1
- Streak
- green
- Lustre
- submetallic, metallic
- Crystal system
- Isometric (cubic)
- Colours
- iron black, brownish black tarnish
- Transparency
- opaque
- Cleavage and fracture
- perfect cubic; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.