Mineralienatlas - Fossilienatlas
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Inserted from |
Diether G., Bodensee-Nord |
Collectors Summary
| Chemical Formula | Ca2Mn2+4Al4[B2Si8O30](OH)2 |
| Color | gelb, orangerot |
| Lustre | Glasglanz |
| Hardness (Mohs) | 6.50 - 7.00 |
| Cleavages | gut {100}, schlecht {001}, {110}, {011} (in Analogie zur Axinit-Gruppe) |
| Fracture | uneben, muschelig |
| Solubility | ++ HF, Säuren! |
| Crystal System | triklin, P1 |
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