- Sturmanite, Gypsum
- Thumbnail, 2.5 x 1.0 x 0.5 cm
- Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa
This is a fine pseudomorph. The Sturmanite, which replaces what appears to be extruded Gypsum, has a very nice color and superb luster. Ex. Willy Israel Collection.