Caledonite

Caledonite


Composition: Pb5Cu2(CO3)(SO4)3(OH)6
Crystal System : Orthorhombic
Colours: Bluish-white, greenish-blue, bluish-green
Lustre : Vitreous, resinous
Hardness (H) : 2.5-3.0
Specific Gravity (S.G) : 5.75-5.77
References: Strunz et al. (1958a)

Distribution

Very rare. First oxidation zone, at surface, and in the upper levels only.

Occurrence

  • Supergene
  • 1st Oxidation Zone

Paragenetic and General Notes

Well-formed crystals of distinctively coloured caledonite line small vugs in granular mixtures of cerussite, with malachite and linarite from the upper portion of the first oxidation zone.