Rare. Only observed by reflected light microscopy.
- 2nd Oxidation Zone
Paragenetic and General Notes
Remarkable for its unusual chemistry, as a tin- and germanium-bearing sulphide. One of very few tin-bearing minerals recorded at Tsumeb.
Mawsonite is described from Tsumeb as small, rounded inclusions in bornite, and as microscopic inclusions in tennantite from 30 Level (Bartelke, 1976).