Chalcocite with Calcite

Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 8.6 × 8 × 7.6 cm = 3.39” × 3.15” × 2.99”
Main crystal size: 2.6 × 1.6 cm = 1.02” × 0.63”