Mineralienatlas - Fossilienatlas
Informations
Inserted from |
Diether G., Bodensee-Nord |
Collectors Summary
| Chemical Formula | Mn3+O(OH) |
| Color | stahlgrau, eisenschwarz |
| Streak color | rötlichbraun, schwarz |
| Lustre | Halbmetallglanz |
| Hardness (Mohs) | 4 |
| Cleavages | vollommen {010}, gut {110} {001} |
| Fracture | unregelmäßig, uneben |
| Solubility | +++ heiße konz. Säuren |
| Crystal System | monoklin, P21/c |
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