Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Goethite

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_660-3

Synonyms

Definition

Goethite is a hydrated iron oxide, or iron oxyhydroxide, of chemical formula FeO(OH) (orthorhombic crystal system). Goethite forms by weathering of iron-rich minerals and it is commonly found in soils. It may also be precipitated by groundwater in low-temperature environments (authigenic goethite in marine and lacustrine sediments). Silica-associated goethite has been found in hydrothermal deposits. The occurrence of goethite on planetary surfaces could be used as an indicator of low-temperature weathering with the involvement of liquid water.

See Also

Keywords

Iron Oxide Bioorganic Chemistry Liquid Water Chemical Formula Crystal System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.GEOTOP Research Center for Geochemistry and GeodynamicsUniversité du Québec à MontréalMontréalCanada