Tsumeb is the Type Locality
Extremely rare. The type specimen is from the second oxidation zone, on 31 Level. Also from the third oxidation zone (Gebhard, 1999).
- 2nd Oxidation Zone
- 3rd Oxidation Zone
Paragenetic and General Notes
On the type specimen (from 31 Level), johillerite occurs as radiating masses of blades and fibres to 2mm, elongated on . It is associated with earlier conichalcite and cuprian adamite (Keller, 1982). The colour is a startling violet-blue.
In the third oxidation zone johillerite occurs with leiteite and cuprian adamite (Gebhard, 1999).