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: 3.2 × 2.8 × 2.1 cm = 1.26” × 1.10” × 0.83”
Main crystal size: 0.5 × 0.5 cm = 0.20” × 0.20”