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: 2.8 × 2.6 × 1.9 cm = 1.10” × 1.02” × 0.75”
Main crystal size: 1.3 × 0.9 cm = 0.51” × 0.35”