Chalcopyrite with Dolomite and Siderite

Troya Mine, Mutiloa, Comarca Goyerri, Guipúzcoa / Gipuzkoa, Basque Country (Euskadi)  Spain (±1983)

Specimen size: 12.3 × 8.9 × 3.4 cm = 4.84” × 3.50” × 1.34”
Main crystal size: 1.6 × 1.2 cm = 0.63” × 0.47”