Malachite (on Dolomite)

Malachite


Composition: Cu2(CO3)(OH)2
Crystal System : Orthorhombic
Lustre : Subadamantine, vitreous, dull, earthy
Hardness : 3.5-4.0
Specific Gravity : 4.05
References:

Bartelke (1976)

Occurrence

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

Notable Finds

Crystals of non-pseudomorphous malachite to 10 mm were found in the first oxidation zone, as were very fine examples of malachite pseudomorphs after azurite. In the second oxidation zone, the so-called "Perkins Sams" azurite pocket also yielded very large and attractive malachite pseudomorphs. Large crystals of non-pseudomorphous malachite (with cuprite) were again found in the third oxidation zone (Gebhard, 1999).