Bultfonteinite with Hydroxyapophyllite-(K) and Calcite

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

Specimen size: 4.3 × 3.6 × 2.7 cm = 1.69” × 1.42” × 1.06”
Main crystal size: 1.6 × 1.5 cm = 0.63” × 0.59”