Sphalerite, Dolomite

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 3.7 × 5.2 cm = 1.46” × 2.05”
Main crystal size: 2.5 × 2.4 cm = 0.98” × 0.94”