Mineral: Gypsum, Malachite
Chemistry: CaSO4 2H2O
Size: 50 mm
Owner: Harvard University (W. Klein Collection)
Photographer: Malcolm Southwood

A single, composite (but incomplete) crystal of colourless gypsum, with a little malachite and iron oxides associated at the rear of the specimen which lend localised colour. 

The specimen is from the Wilhelm Klein Collection (# 790; MGMH 127387).  All of the gypsum specimens in the Klein Catalog are attributed to "3.- 8. Sohle" (= 3-8 Level) with no specific level number given for individual specimens.

Courtesy  of  the  Mineralogical  &  Geological  Museum  at  Harvard  University,  Gypsum; MGMH  ID# 127387, Tsumeb; Namibia. @ copyright 2012, President and Fellows of Harvard College. All rights reserved.