Chalcopyrite with Quartz, Dolomite and Calcite

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

Specimen size: 6.3 × 4.4 × 2.5 cm = 2.48” × 1.73” × 0.98”
Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”