FeO(OH)

This sample of lepidocrocite is displayed in the Smithsonian Museum of Natural History. Lepidocrocite is an oxide of iron with the composition FeO(OH). This sample is about 12x12 cm and is from Horhausen, Rhineland-Pfalz, Germany.

Lepidocrocite is a dimorph of goethite, having the same empirical formula.