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Cerussite, (after Anglesite)


Size: 40 mm
Owner: Harvard University (Karabacek Collection)
Photographer: Malcolm Southwood

A group of anglesite crystals (to 40 mm) has been replaced (or encrusted) by cerussite, tiny crystals of which, with characteristic striation and twinning, can be seen over the surface of the specimen (with magnification).  A little arsentsumebite is visible (at the base of the image), and a malachite pseudomorph after azurite, and fresh azurite crystals are present on the reverse.

 

The specimen is # 4157 in the Karabacek Collection (MGMH # 128783), which dates it to the first oxidation zone.

 

 

Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University; Cerussite, MGMH  ID# 128783, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.