Mineral: Anglesite, Galena
Chemistry: PbSO4
Size: 88 mm
Owner: Harvard University (Karabacek Collection)
Photographer: Malcolm Southwood

A group of large anglesite crystals (to 75 mm) on residual and highly oxidized sulphide.  The anglesite crystals range from colourless-white, to blackish where they contact the sulphide matrix, and quite coarse sulphide inclusions, almost certainly galena (?), are visible in parts of the crystals.

The specimen is from the first oxidation zone at Tsumeb, and is number 4821 in the Karabacek collection.

Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University,  Anglesite; MGMH  ID# 93661, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.