Hübnerite
Mineral MnWO4
Also called Huebnerite
About it
The manganese-rich wolframite, red-brown and glowing deep red when light passes through thin blades. Superb crystals come from Pasto Bueno in Peru and the Adams mine near Silverton, Colorado.
- Type
- Mineral
- Group
- Tungstate, wolframite group
- Formula
- MnWO4
- Hardness (Mohs)
- 4–4.5
- Specific gravity
- 7.1–7.2
- Streak
- yellowish brown to reddish brown
- Lustre
- submetallic, adamantine (diamond-like), resinous
- Crystal system
- Monoclinic
- Colours
- reddish brown, brownish black, red, yellowish brown
- Transparency
- translucent, opaque
- Cleavage and fracture
- perfect in one direction; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.