Gaudefroyite

N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa

Specimen size: 1.8 × 1.3 × 0.9 cm = 0.71” × 0.51” × 0.35”
Main crystal size: 1.4 × 0.5 cm = 0.55” × 0.20”