Limonite
Limonite is a rock with the chemical formula FeO(OH)·nH2O. It has a Mohs hardness of 4 to 5.5 and dull to submetallic luster.
Limonite properties
| Type | Rock |
|---|---|
| Chemical formula | FeO(OH)·nH2O |
| Mohs hardness | 4 to 5.5 |
| Luster | Dull to submetallic |
| Typical colors | Yellow-brown to dark brown |
| Formation | Typically forms in oxide deposits and weathered iron-rich rocks |
| Rarity | 4 / 10 |
Mohs hardness 4–5.5 — medium
1 · Talc5 · Apatite10 · Diamond
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