Mineralienatlas - Fossilienatlas
Informations
Inserted from |
Philip Blümner, Nürnberg, Mittelfranken, Deutschland |
Collectors Summary
| Chemical Formula | Ca2(Fe2+,Mn)Fe3+Si5O14(OH) |
| Color | grünlich-schwarz, bräunlich-schwarz, schwarz |
| Streak color | braun |
| Lustre | Glasglanz |
| Hardness (Mohs) | 5.5 - 6 |
| Solubility | ++ HF nur, Ultraschallbad! |
| Crystal System | triklin, P1 |
| Morphology | kurzprismatisch, plattig |
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