Sturmanite (Kalahari Manganese Fields, South Africa)
N'Chwaning 2 Mine, kalahari manganese Fields, South Africa. 40mm Tall, 20 x 10mm width.
These strange Strumanites are few and far between. They almost resemble a pseudomorph of something else but close examination will show they are Sturmanites, these are not often availablbe and remain hard to come by.