Sphalerite

Áliva Mine (Las Mánforas Mine), Áliva mining area, Camaleño, Comarca Liébana, Cantabria  Spain (1979)

Specimen size: 9.6 × 4.4 × 3.4 cm = 3.78” × 1.73” × 1.34”
Main crystal size: 5.1 × 3.8 cm = 2.01” × 1.50”