Goethite

Goethite


Composition: FeO(OH)
Crystal System : Orthorhombic
Lustre : Adamantine, metallic, silky, dull
Hardness : 5.0-5.5
Specific Gravity : 4.27-4.29
References: Keller (1977a)

Occurrence

  • Supergene
  • 1st Oxidation Zone
  • 2nd Oxidation Zone
  • 3rd Oxidation Zone

Notable Finds

As botryoidal masses in the third oxidation zone, on 46 Level (Gebhard, 1999).