Calcite with manganese oxides inclusions

Pallaflat Mine, Bigrigg, West Cumberland Iron Field, former Cumberland, Cumbria  United Kingdom

Specimen size: 10.4 × 5.5 × 4.1 cm = 4.09” × 2.17” × 1.61”
Main crystal size: 2.5 × 1.8 cm = 0.98” × 0.71”