Calcite (Tsumeb, Namibia)
Tsumeb Mine, Otjikoto Region, Namibia. 65mm x 40mm x 20mm.
Well formed tan coloured Calcites from Tsumeb. At a glance they resemble Siderites but closer inspection will show that they are indeed Calcites, they just have a unique look about them. This is a relativly old specimen from the mine and in good shape given the age.