Hardness: 3.5 - 4
Streak: Lighter blue
Lustre: Vitreous, earthy (fine grained)
Habit: Fine grained coating or fracture filling on rock
Colours: Azure blue
| ||Crystal System: Monoclinic|
Reaction with HCl: Strong
Identification in hand sample:
Colour is reliable, association with malachite is also indicative.
Common mineral in the near-surface oxidized portion of copper-bearing hydrothermal sulfide mineral deposits. Associated with malachite.
Industrial / ecomonic uses:
A minor ore of copper, also has ornamental uses. Sometimes a pigment (when powdered).