The Tsumeb Mine, Namibia is well known for the Dolomite casts it has produced over the working life of the mine. This specimen displays the form to advantage, showing a shell of Dolomite with a botryoidal interior. The outer surface having negative botryoidal impressions, with scattered crystal of Malachite after Azurite, and here and there colourless crystals of Cerussite. A classic cast from the mine.