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Wickmanite

- Formula
- Mn2+Sn4+(OH)6
- Crystal System
- Isometric
- Crystal Habit
- Octahedral Crystals
- Cleavage
- None, None, None
- Luster
- Vitreous (Glassy)
- Color
- yellow, orange brown, yellow orange, colorless
- Streak
- white
- Class
- Isometric - Hexoctahedral
- Hardness
- 3-4
- WebMineral
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Wickmanite from Långban, Filipstad, Värmland, Sweden

Yellow crystalline crusts. A fairly rare tin oxide.
Click thumbnail images for larger view.
Wickmanite from San Martín mine, Sombrerete, Zacatecas, Mexico
Very, very rich specimen with a hundred or so light yellow Wickmanite crystals to about 0.3mm on a frosted Quartz crystal group. Most all of the crystals are between the two blue arrows. A nice Calcite crystal group on the side to 1.2cm.
Click thumbnail images for larger view.