Willemite, Cerussite, Calcite and Copper

A rather significant piece with yellow willemites scattered about a matrix with copper intrusions . The calcites are opaque stepped rhombohedra which are coated by a crusty white substance, likely additional carbonate.  Excellent.  Ex Piroska Magyar

Locality: Tsumeb MIne, Otjikoto Region, Tsumeb Namibia

Composition: copper, zinc silicate, calcium carbonate, lead carbonate