Cobaltoan Dolomite

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

Specimen size: 7.6 × 3.8 × 2.9 cm = 2.99” × 1.50” × 1.14”
Main crystal size: 0.9 × 0.9 cm = 0.35” × 0.35”