Calcite with Hematite

N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2008)

Specimen size: 6.3 × 6.3 × 3.8 cm = 2.48” × 2.48” × 1.50”
Main crystal size: 5.4 × 4.1 cm = 2.13” × 1.61”