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: 3.3 × 3.1 × 1.7 cm = 1.30” × 1.22” × 0.67”
Main crystal size: 1.4 × 1.1 cm = 0.55” × 0.43”