Chemistry: Cu3(CO3)2(OH)2
Size: 95 mm
Owner: Harvard University (Karabacek Collection)
Photographer: Malcolm Southwood

Lustrous, equant crystals of pristine blue-black azurite (to 20 mm) on a bright green matrix of copper arsenates - arsentsumebite (?) - and green smithsonite. 


The specimen is # 1827 in the Karabacek Collection (MGMH # 93569), which dates it to the first oxidation zone.


Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University, Azurite; MGMH  ID# 93569, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.