Composition: Zn2(AsO4)(OH)
Crystal System : Triclinic
Colours: Cream, ivory, beige-yellow, yellow, green
Lustre : Vitreous
Hardness (H) : 3.5
Specific Gravity (S.G) : 4.55
References: Gebhard (1999)


Very rare. In the second oxidation zone (?), but notably in the third oxidation zone, on 44 Level.


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

Notable Finds

The so-called "Zinc Pocket", on 44 Level in the third oxidation zone yielded specimens with ivory-coloured crystals to 10 mm.

Paragenetic and General Notes

Loose intergrowths of pale-yellow, tabular paradamite crystals, sometimes showing partial alteration to adamite, were found in the "Zinc Pocket" on 44 Level.  According to Gebhard (1999) the best specimens from this find consisted of ivory-coloured crystals (to 10 mm), associated with reinerite and legrandite.

A spearmint-green copper-bearing variety or paradamite also occurs in the third oxidation zone, as rounded aggregates of tabular crystals.