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Azurite


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

Prismatic crystals of blue-black azurite (to 8 mm) on a cast of iron-stained carbonate –  smithsonite (?) and / or dolomite (?). These small crystals are translucent, which enhances the colour intensity considerably.

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 87479).

Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University,  Azurite; MGMH  ID# 87479, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.