Olmiite - N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province South Africa

Olmiite

N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province South Africa (01/2002)

Specimen size: 2.5 × 1.7 × 1.7 cm = 0.98” × 0.67” × 0.67”
Main crystal size: 2.4 × 1.9 cm = 0.94” × 0.75”