MIMETITE with CERUSSITE and DUFTITE

Although the association of Mimetite, Cerussite and Duftite from the Tsumeb mine in the Otjikoto Region of Namibia is very common, this is a far from a common specimen.  Blocky prismatic crystals of colourless, glassy Cerussite, typically  15 x 8 x 8 mm, are richly coated on their upper surface with a continuous veneer of sucrosic pale lemon-yellow Mimetite micro-crystals.  Beneath the specimen, the Cerussite crystals are coated with a thin sheet of tiny rhombohedral Calcite crystals which, in turn, are completely hidden by a coating of bright leafy-lime green Duftite.  The combination of these three minerals with striking colours and habits makes for an interesting and aesthetic miniature.