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: 4.1 × 3 × 2 cm = 1.61” × 1.18” × 0.79”
Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”