Chalcophyllite


Composition: Cu9Al[(OH)12(SO4)1.5(AsO4)2].18H2O
Crystal System : Trigonal
Colours: Grey-green (Maucher, 1908)
Lustre : Sub-adamantine, Vitreous, Pearly
Hardness : 2
Specific Gravity : 2.67-2.69
References: Maucher (1908)

Occurrence

  • Supergene
  • 1st Oxidation Zone