Cobaltoan Calcite

Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba)  Congo D.R.

Specimen size: 6.7 × 5.2 × 2.6 cm = 2.64” × 2.05” × 1.02”
Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”