Extremely rare. First and second oxidation zones.
- 1st Oxidation Zone
- 2nd Oxidation Zone
Paragenetic and General Notes
As blackish-brown coatings on cerussite, with massicott, from the upper levels of the mine (Pinch and Wilson, 1977; Gebhard, 1999).
As minute blackish-brown crystals "in the lower oxidation zone" (Pinch and Wilson, op.cit.).