Sphalerite with Siderite and Pyrite

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

Specimen size: 5.8 × 4.6 × 4.9 cm = 2.28” × 1.81” × 1.93”
Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”