Calcite with Marcasite

Bellmunt del Priorat, Comarca Priorat, Tarragona, Catalonia / Catalunya  Spain

Specimen size: 9.9 × 5.9 × 4.4 cm = 3.90” × 2.32” × 1.73”
Main crystal size: 9.6 × 4.5 cm = 3.78” × 1.77”