Chalcocite with Bornite

Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  United Kingdom

Specimen size: 2.6 × 1.9 × 1.7 cm = 1.02” × 0.75” × 0.67”
Main crystal size: 0.6 × 0.3 cm = 0.24” × 0.12”