Since 2013 – From Collectors for Collectors
| Chemische Formel | MnO(OH) | |
| Familie | ||
| Farbe | schwarz | |
| Härte | 4 | |
| Kristallsystem | monoklin | |
| Glanz | Metallglanz | |
| Form | prismatisch, nadelig | |
| Typlokalität | Deutschland | |
| Weitere Fundorte | Südafrika, Frankreich, Mexiko, Michigan, Wyoming, Wisconsin | |
| Bildung | hydrothermal, Metamorphose | |
| Paragenesen | Rhodochrosit, Baryt, Sturmanit, Calcit, Ettringit, Hämatit, Granat | |
| Pseudomorphose | Calcit | |
| Toxizität |  ungiftig | |
| Strichfarbe | dunkelbraun | |
| Mineralklasse | Hydroxide | |
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