Mottramite (PbCu(VO₄)(OH)) is a copper-lead vanadate — the copper analog of descloizite (PbZn(VO₄)(OH)) — forming a continuous solid-solution series. Named after Mottram St. Andrew (Cheshire, England). Tsumeb (Namibia) supplies world-class olive-green to black-green Mottramite as druzy crusts and platy aggregates.
Key Facts
- Mohs hardness 3.
- Orthorhombic; tabular, druzy, and platy habit.
- Forms continuous series with descloizite (Zn endmember).
- Olive green to black-green color.
- Common in oxidized Pb-Cu-V cap zones; Tsumeb is the world standard.
Notable Localities
Tsumeb (Namibia) is the world standard. Mottram St. Andrew (England) is the type-locality. Berg Aukas (Namibia) yields additional collector material.
Found at these Localities
- Tsumeb Mine (楚梅布矿)
