Chalcopyrite with Gypsum, Dolomite and Calcite

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

Specimen size: 8.7 × 4.8 × 6 cm = 3.43” × 1.89” × 2.36”
Main crystal size: 1 × 0.6 cm = 0.39” × 0.24”