Since 2013 – From Collectors for Collectors
| Chemische Formel | Fe23+[SO4]3·9H2O | |
| Familie | ||
| Farbe | violett, gelb, grün, farblos | |
| Härte | 2,5 | |
| Kristallsystem | trigonal | |
| Glanz | Glasglanz | |
| Form | tafelig, prismatisch, pyramidale | |
| Typlokalität | Chile | |
| Weitere Fundorte | Japan, Peru, Spanien, Utah | |
| Bildung | Oxidationszone von Sulfid-Lagerstätten (z.B. Pyrit), Resublimation | |
| Paragenesen | Alunogen, Chalkanthit, Römerit, Halotrichit | |
| Pseudomorphose | ||
| Toxizität |  ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Sulfate | |
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| Chemische Formel | NH4Al[SO4]2 · 12H2O | |
| Familie | ||
| Farbe | farblos, weiß | |
| Härte | 1,5-2 | |
| Kristallsystem | kubisch | |
| Glanz | Glasglanz;Seidenglanz | |
| Form | faserig, Oktaeder | |
| Typlokalität | Tschechien | |
| Weitere Fundorte | Deutschland, Ungarn, Wyoming | |
| Bildung | Resublimation | |
| Paragenesen | Epsomit, Rostit, Alunogen, Ammoniojarosit | |
| Pseudomorphose | ||
| Toxizität | ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Sulfate | |
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| Chemische Formel | Fe2+Al2[SO4]4·22 H2O | |
| Familie | ||
| Farbe | weiß, grau | |
| Härte | 1,5-2 | |
| Kristallsystem | monoklin | |
| Glanz | Glasglanz | |
| Form | faserig | |
| Typlokalität | ||
| Weitere Fundorte | Kalifornien, Utah, Italien, Spanien, Frankreich | |
| Bildung | Verwitterung, thermal | |
| Paragenesen | Voltait, Römerit, Alunogen, Copiapit, Pyrit | |
| Pseudomorphose | ||
| Toxizität | ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Sulfate | |
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