Rhodochrosite

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

Specimen size: 2 × 1.9 × 1.3 cm = 0.79” × 0.75” × 0.51”
Main crystal size: 1.4 × 0.5 cm = 0.55” × 0.20”