Since 2013 – From Collectors for Collectors
| Chemische Formel | KFe33+[(OH)6|(SO4)2] | |
| Familie | ||
| Farbe | braun, gelb | |
| Härte | 2,5-3,5 | |
| Kristallsystem | trigonal | |
| Glanz | Diamantglanz;Glasglanz | |
| Form | tafelig, pseudokubisch | |
| Typlokalität | Spanien | |
| Weitere Fundorte | Österreich, Bolivien, Mexiko, Polen, Nevada, South Dakota, Pennsylvania | |
| Bildung | Oxidationszone von Sulfid-Lagerstätten, hydrothermal | |
| Paragenesen | Goethit, Skorodit, Gips, Baryt, Gold, Hämatit | |
| Pseudomorphose | ||
| Toxizität |  ungiftig | |
| Strichfarbe | gelb | |
| Mineralklasse | Sulfate | |
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| Chemische Formel | Fe3+[AsO4]·2H2O | |
| Familie | ||
| Farbe | farblos, grün, blau, violett | |
| Härte | 3,5-4 | |
| Kristallsystem | orthorhombisch | |
| Glanz | Diamantglanz;Glasglanz | |
| Form | prismatisch, dipyramidal, massig | |
| Typlokalität | Deutschland | |
| Weitere Fundorte | Namibia, Mexiko, China, England, Marokko, Japan, Arizona, Utah | |
| Bildung | Oxidationszone von Arsen-Lagerstätten | |
| Paragenesen | Pharmakosiderit, Pyrit, Jarosit | |
| Pseudomorphose | ||
| Toxizität |  Hohe Toxizität | |
| Strichfarbe | weiß | |
| Mineralklasse | Arsenate | |
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| Chemische Formel | KAl3[(OH)6|(SO4)2] | |
| Familie | ||
| Farbe | weiß, rot | |
| Härte | 3,5-4 | |
| Kristallsystem | trigonal | |
| Glanz | Glasglanz;Perlmutglanz | |
| Form | Rhomboeder, körnig | |
| Typlokalität | Italien | |
| Weitere Fundorte | Taiwan, Utah, Brasilien | |
| Bildung | Geysire, Sedimentär, Metasomatose | |
| Paragenesen | Pyrit, Jarosit | |
| Pseudomorphose | ||
| Toxizität | ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Sulfate | |
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