| Name: | Goethite |
| Derivation: | Names after the German poet J W Von Goethe (1749-1832), who was also a mineral collector |
| Formula: | FeO(OH) |
| Description: | Dark brown crystals. This photograph shows goethite crystals on grey rock. |
Goethite has the same chemical formula as Limonite, which can be bright yellow! Yellow Limonite is yellow ochre, which has been used as a pigment for paint and cosmetics throughout history and before. The photograph on the right is mostly brown Limonite.