Extremely rare. Reported by Maucher (1908) from the first oxidation zone.
- 1st Oxidation Zone
Paragenetic and General Notes
Despite Maucher's (1908) early identification of clinoclase, it was not encountered again on Tsumeb material for more than a century. Zindel (2010) identified clinoclase in fractures and cavities on a specimen from the Schiffner collection. The clinoclase forms small spots and "crystal lawns" consisting of tiny prismatic, partly radiating highly glossy crystals, pale-blue on the surface of the specimen and dark-blue in the fractures, apparently due to its being protected from the light. Malachite, and "an arsentsumebite-like and cuprite-like mineral are associated with clinoclase." (Von Bezing et al., 2014).