Mineral Species: Duftite on Quartz 

Chemical Formula: (Pb,Ca)(Cu,Zn)AsO4(OH)

Chemical Name: Lead Calcium Copper Zinc Arsenate Hydroxide

Mineral Class: Arsenate

Mineral Notes: Duftite is an oxidation product of weathered primary lead and copper ore deposits. It is a memeber of the Adelite group. The mineral is named after G. Duft, General Manager of the mine at Tsumeb, Namibia.

Description: Small, yellow-green crystals of Duftite covering the faces of underlying crystals of rhombohedral Calcite. Both the Duftite and Calcite present a strong luster making this an attractive display specimen.

Location: Tsumeb, Otavi, Namibia (Type Location).