Brunogeierite, Quartz
Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
Close-up of a 2.5 cm specimen of brunogeierite and quartz. In addition, there are two unidentified minerals on the specimen, one is the orange material scattered over the specimen, the other, a few, tiny, well-formed yellow crystals (one is attached to a quartz).
© Bruce Cairncross