Azurite from Tsumeb, Namibia. Specimen and photo – J de Jongh


Crystal system:            Monoclinic                                Hardness:         3,5 - 4

Density:                        3.83 average                             Cleavage:         perfect

Streak:                         light blue                                   Colour:             blue to very dark blue.

Occurrence:                 A secondary mineral found in the oxidized zones of copper-bearing ore depo...


Continue reading ...