Chalcopyrite with Calcite

Salomón Cut, bench 290, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain

Specimen size: 6.2 × 4.3 × 4.3 cm = 2.44” × 1.69” × 1.69”
Main crystal size: 0.9 × 0.7 cm = 0.35” × 0.28”