(n.) A hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform or stalactitic structure. The color varies from yellowish to blackish brown.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). goethite. Retrieved September 25, 2026, from http://smartdefine.org/goethite/definitions/2012935 |
| Chicago | Webster's. 2011. "goethite" http://smartdefine.org/goethite/definitions/2012935 (accessed September 25, 2026). |
| Harvard | Webster's 2011, goethite, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/goethite/definitions/2012935>. |
| MLA | Webster's. "goethite" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/goethite/definitions/2012935> |