Mangoancalcite on Calcite (South Africa)
N'Chwaning 2 Mine, Kalahari Manganese Fields, South Africa. 35mm x 35mm x 15mm.
This is a rather unusual specimen where the mangoancalcite has not entirely covered the calcites, these little "tips" of the calcites protrude while the balance of the calcite is covered by the mangoancalcite. Quite interesting indeed. packed shipping weight +/- 110gr.