Mineralienatlas - Fossilienatlas
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Inserted from |
Diether G., Bodensee-Nord |
Collectors Summary
| Chemical Formula | Mn2+Mn63+O8SiO4 |
| Color | dunkelbraun, schwarz, stahlgrau |
| Streak color | bräunlich-schwarz |
| Lustre | Metallglanz |
| Hardness (Mohs) | 6 - 6.5 |
| Fracture | uneben, submuschelig |
| Solubility | +++ HCl, Königswasser, - H2O |
| Crystal System | tetragonal, I41/acd |
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