Mineralpedia Details for Manjiroite
Manjiroite
- Formula
- Na(Mn4+,Mn2+)8O16·nH2O
- Crystal System
- Tetragonal
- Crystal Habit
- Massive
- Cleavage
- None, None, None
- Luster
- Earthy (Dull)
- Color
- brownish gray, gray brown, dark brown gray
- Streak
- brownish black
- Class
- Tetragonal - Dipyramidal
- Fracture
- Conchoidal
- Hardness
- 7
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Manjiroite from Smartt Mine, Kalahari Mn field, Northern Cape Province, South Africa
Compact fibrous crystals in matrix.
Click thumbnail images for larger view.
