Mineralpedia Details for Manganogrunerite
Manganogrunerite
- Formula
- [box]Mn2+2Fe2+5Si8O22(OH)2
- Crystal System
- Monoclinic
- Crystal Habit
- Massive - Fibrous, Radial
- Cleavage
- Perfect, Imperfect, None
- Luster
- Vitreous - Silky
- Color
- brown, gray green, yellow green, dark green
- Streak
- white
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle - Conchoidal
- Hardness
- 5-6
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Manganogrunerite from North mine, Broken Hill, New South Wales, Australia
Tan radial fibrous sprays.
Click thumbnail images for larger view.
