Definition of "goethite"

goethite

/ˈɡœtaɪt/

noun
countable and uncountable, plural goethites
1. (mineralogy) An iron oxyhydroxide that is the main constituent of rust.
  Quotations
  Recent work has shown that the teeth of limpets approximate to an almost ideal model natural composite material where high aspect ratio mineral nanofibres of goethite reinforce a protein matrix.
  2015 February 18, Asa H. Barber, Dun Lu, Nicola M. Pugno, “Extreme strength observed in limpet teeth”, in Journal of the Royal Society Interface