Malachite | ‪#‎Geology

Formula: Cu2(CO3)(OH)2
Colour:Bright green, with ...
Hardness:3½ - 4
Streak:Light green
Malachite is a green, very common secondary copper mineral with a widely variable habit. Typically it is found as crystalline aggregates or crusts, often banded in appearence, like agates. It is also often found as botryoidal clusters of radiating crystals, and as mammillary aggregates as well.

Azurite |‪#‎geology

Formula: Cu3(CO3)2(OH)2
Colour:Azure blue, blue, light ...
Hardness:3½ - 4
A secondary copper mineral frequently found in the oxidized zones of Cu-bearing ore deposits

credit photo to R.Weller/Cochise College.
Gemstones courtesy of Starborn Creations
Sedona. Arizona

Post a Comment

Unknown said... September 23, 2016 at 7:44 AM

This takes my breath away it is so stunning.