Sphalerite on Dolomite

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

Specimen size: 2.2 × 2 × 1.2 cm = 0.87” × 0.79” × 0.47”
Main crystal size: 1.1 × 0.8 cm = 0.43” × 0.31”