Sphalerite with Siderite, Dolomite and Pyrite

Troya Mine, Mutiloa, Comarca Goyerri, Guipúzcoa / Gipuzkoa, Basque Country (Euskadi)  Spain (1990)

Specimen size: 4.8 × 2.8 × 3.3 cm = 1.89” × 1.10” × 1.30”
Main crystal size: 1 × 0.6 cm = 0.39” × 0.24”