Sphalerite

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

Specimen size: 3.3 × 3.3 × 1.8 cm = 1.30” × 1.30” × 0.71”