Azurite

IMA formula: Cu₃(CO₃)₂(OH)₂

Crystallography: Monoclinic. P2₁. a = 4.99995(11) Å , b = 5.82256(14) Å, c = 10.33723(19) Å, β = 92.2103(17)°. Z = 2.

Specimen #179. Azurite. Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia. FOV 7.4 mm.

Specimen #146. Azurite. Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany. FOV 7.2 mm.