OLMIITE - N'CHWANING II 3.6 x 3.2 x 2 cm
€ 32,00
N'Chwaning II Mine, Kuruman, Kalahari manganese field, Northern Cape, South-Africa
A rare miniature with sharp, carved-looking, radial cluster crystallization of tan colored olmiite, which is a close relative of poldervaartite with brown hausmannite. From an old collection. Not often offered.