Tsumeb is the Type Locality
Extremely rare. The type material is from the first oxidation zone, between 6 and 8 levels. However, it's status as a naturally occurring mineral at Tsumeb is doubtful.
- 1st Oxidation Zone
Paragenetic and General Notes
Itoite has an almost identical powder pattern to fleischerite when the latter is heated to 300 degrees C. According to the IMA itoite remains a valid species, but its validity as a naturally occurring mineral at Tsumeb is doubtful. It is probable that 'itoite' is formed from fleischerite during preparation (grinding) for analysis.