Calcite with Pyrite

La Cuerre Mine, La Florida mining area, Rionansa-Herrerías, Comarca Saja-Nansa, Cantabria  Spain

Specimen size: 9.4 × 5.8 × 2.7 cm = 3.70” × 2.28” × 1.06”
Main crystal size: 2 × 0.6 cm = 0.79” × 0.24”