Home Goethite
IV - Hydroxides
Crystal habit of Goethite Goethite Goethite Goethite

Name   Goethite
Chemistry   FeOOH (a-FeOOH)
Hardness   5 - 5.5
Lustre   adamantine - silky
Colour   light yellow to black brown
Streak   brown yellow to yellow 
Density [g/cm3]   4.3
Crystal habit   orthorhombic, crystals acicular to fibrous
Cleavage, Fracture   [010] perfect
other characteristics and occurrences   in radial or fibrous aggregates, dense, massive, earthy, reniform, most limonite is made up by goethite

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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