Mineralienatlas - Fossilienatlas
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Philip Blümner, Nürnberg, Mittelfranken, Deutschland |
Collectors Summary
| Chemical Formula | K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2 |
| Color | dunkel bläulichgrün |
| Streak color | blass grün |
| Hardness (Mohs) | 2 |
| Solubility | +++ Säuren |
| Crystal System | monoklin, C2 |
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