Gothite \G["o]"thite\, gothite \go"thite\, or Goethite
\Goe"thite\, n. [After the poet G["o]the.] (Min.)
A hydrous oxide of iron ({HFeO2}), occurring in prismatic
crystals, also massive, with a fibrous, reniform, or
stalactitic structure. The color varies from yellowish to
blackish brown.
[1913 Webster]