Olmiite with Bultfonteinite (Kalahari Manganese Fields, South Africa)
N'Chwaning 2 Mine, Kalahari Manganese Fields, South Africa. 40mm x 30mm x 15mm.
At first glance the specimen looks simply like a normal Olmiite, closer inspection shows the little tufts and needles of Bultfonteinite. The associated Bultfonteinite is most definitly the thing that makes this specimen stand out amongst the others.