Cuprite with Calcite

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

Specimen size: 5.5 × 5 × 6.8 cm = 2.17” × 1.97” × 2.68”
Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”