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goethite

Syllabification: goe·thite
Pronunciation: /ˈɡōTHīt
 
/

Definition of goethite in English:

noun

A dark reddish-brown or yellowish-brown mineral consisting of oxyhydroxide iron, occurring typically as masses of fibrous crystals.
Example sentences
  • Tiny crystals of hematite, goethite, chalcopyrite, marcasite, and dolomite are common and make excellent micromounts.
  • Although each mound had substantial amounts of quartz and kaolinite, minerals that reflected differences in mound material included magnetite, gypsum, hornblende, hematite, goethite, and feldspars.
  • It includes goethite on quartz, secondary quartz enclosing already crystallized goethite, and goethite and secondary quartz crystallizing together.

Origin

early 19th century: from the name of J.W. von Goethe, Johann Wolfgang von + -ite1.

Definition of goethite in:

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