Maghemite


Composition: Fe2O3
Crystal System : Cubic
Colours: Brown, brick-red
Lustre : Dull
Hardness (H) : 5
Specific Gravity (S.G) : 5.0-5.2

Distribution

Extremely rare. Second (?) oxidation zone.

Occurrence

  • Supergene
  • 2nd Oxidation Zone

Paragenetic and General Notes

Keller and Bartelke (1982; citing Schnorrer-Köhler, 1980) report small cubic crystals of maghemite in association with duftite and willemite, implicitly (in the context of the article) from the second oxidation zone.

According to Gebhard (1999) a single specimen with sub-mm crystals - presumably the one alluded to by Keller and Bartelke (op.cit.) - is the only known example with crystallised maghemite from Tsumeb.