Sphalerite with Siderite

Troya Mine, Mutiloa, Comarca Goyerri, Gipuzkoa / Guipúzcoa, Euskadi  Spain

Specimen size: 6.7 × 6 × 4.2 cm = 2.6” × 2.4” × 1.7”
Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”