Sphalerite with Dolomite and Siderite

Troya Mine, Mutiloa, Comarca Goyerri, Gipuzkoa/Guipúzcoa, Euskadi  Spain (±1985)

Specimen size: 11.6 × 9.1 × 6.3 cm = 4.6” × 3.6” × 2.5”
Main crystal size: 1 × 0.7 cm = 0.4” × 0.3”