Chalcopyrite with Gypsum, Dolomite and Calcite

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

Specimen size: 10.3 × 6.4 × 3.9 cm = 4.06” × 2.52” × 1.54”