Sphalerite with Calcite and Dolomite

Áliva Mine (Las Mánforas Mine), Áliva mining area, Picos de Europa massif, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 6.7 × 5.7 × 4.7 cm = 2.64” × 2.24” × 1.85”