Names after the German poet J W Von Goethe (1749-1832), who was also a mineral collector
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.