Chemistry: Cu3(CO3)2(OH)2
Size: 85 mm
Owner: Harvard University (Karabacek Collection)
Photographer: Malcolm Southwood

Lustrous, blocky, pristine blue-black azurite crystals (to 25 mm) on a whitish carbonate matrix with a little arsentsumebite (?).  The azurite crystals appear to be immediately underlain by a drusy crust of white dolomite (and possibly a little smithsonite (?).


The specimen is # 4313 in the Karabacek Collection (MGMH # 93549), which dates it to the first oxidation zone.


Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University, Azurite; MGMH  ID# 93549, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved