Rhodochrosite

N'Chwaning I Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)

Specimen size: 5.7 × 5 × 3.1 cm = 2.24” × 1.97” × 1.22”
Main crystal size: 1.2 × 0.2 cm = 0.47” × 0.08”