Tsumeb is the Type Locality
Extremely rare. Second oxidation zone.
- 2nd Oxidation Zone
A number of specimens from the major alamosite discovery of the mid-1970s, included plumbotsumite as an accessory mineral.
Paragenetic and General Notes
Plumbotsumite occurs in small vugs on the terminations of alamosite crystals, with melanotekite.
As colourless aggregates of cleaved grains, or of tabular pseudo-hexagonal crystals to 0.5mm. Rarely as larger crystals and crystal aggregates, forming a matrix for sprays of alamosite crystals.