Aragonite, (Var. Tarnowitzite)

Aragonite


Composition: CaCO3
Crystal System : Orthorhombic
Colours: Colourless, white, cream, pale-yellow, pale-green, blue
Lustre : Vitreous, resinous
Hardness : 3.5-4.0
Specific Gravity : 2.947

Occurrence

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

Notable Finds

Fine specimens of the lead-bearing variety "tarnowitzite", and the zinc-bearing "nicholsonite" were recovered from the first oxidation zone. Numerous specimens of pale-blue copper-bearing aragonite, commonly as sub-botryoidal crusts, are of post-mining origin.