This specimen has a dazzling color purple, I bought this beautiful and rare cyclosilicate mineral from the Kalahari Manganese Fields. It comes out of Nchwanning III mine. To the west of Kuruman in the Northern Cape province, South Africa lies the enormous manganese deposits of the Kalahari manganese field which covers at least 1100 square kilometres. These deposits have become world famous not only for the enormous reserves of ores, but also for a wide range of spectacular specimens. Up to date there are 140 different species of minerals classified from this locality. It has radioactivity but is barely detectable.