Warikahnite

Warikahnite


Composition: Zn3(AsO4)2.2H2O
Crystal System : Triclinic
Colours: Colourless, pale-yellow, orange
Lustre : Vitreous, waxy
Hardness (H) : 2
Specific Gravity (S.G) : 4.24
IMA Number: 1978-038
IMA Status: Approved
Discovered By: Clive Queit (S. African dealer)
Named for: Walter Richard Kahn (German collector)
References:

Keller et al. (1979b)

Tsumeb is the Type Locality

Distribution

Very rare. Second oxidation zone.

Occurrence

  • Supergene
  • 2nd Oxidation Zone

Notable Finds

The type specimen is from the East 9 Pillar, on 31 Level, in the second oxidation zone, discovered in 1978. However, in 1984, approximately five small specimens were recovered from a pocket in Zero Stope, also on 31 Level. These are the best of species, comprising wheatsheaf-like arrangements of elongated orange warikahnite crystals to 30 mm with quartz.

Paragenetic and General Notes

Type warikahnite occurs on corroded tennantite, with adamite, stranskiite, koritnigite, claudetite, tsumcorite and ludlockite. The bladed crystals of warikahnite measure up to 3 x 0.5 x 0.5 mm; they are pale yellow to colourless, and arranged in radiating masses.