Azurite, (on Smithsonite)

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

Blocky, equant, azurite crystals (to 27 mm) on a very pale yellowish-pink smithsonite druse, that is stained mustard-yellow by limonite in places. Some tablets of brown wulfenite (to 6 mm) are sparsely distributed in the smithsonite, as well as some blue-green microcrystals of an unidentified mineral (?).

The specimen was purchased from a Tsumeb miner (as part of a large collection) by Professor Charles Palache, during his visit to Tsumeb in April, 1922, indicating that it originated from above 8 Level (the lower limit of mine development at the time of his visit).  (Harvard University # MGHM 87478).

Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University,  Azurite; MGMH  ID# 87478, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.