Jarosite
Jarosite is a mineral with the chemical formula KFe3(SO4)2(OH)6. It has a Mohs hardness of 3.5 - 4 and glassy to pearly luster.
Jarosite properties
| Type | Mineral |
|---|---|
| Chemical formula | KFe3(SO4)2(OH)6 |
| Mohs hardness | 3.5 - 4 |
| Luster | Glassy to pearly |
| Typical colors | Yellow to brown |
| Formation | Typically forms in oxidized environments, often associated with the weathering of iron-bearing minerals. |
| Rarity | 5 / 10 |
Mohs hardness 3.5–4 — soft
1 · Talc5 · Apatite10 · Diamond

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