Quartz after Calcite with Sphalerite and Pyrite

Bucegi Mountains (Gaura), Brasov, Brasov District, Transylvania  Romania (1969)

Specimen size: 13.7 × 12.2 × 6.2 cm = 5.39” × 4.80” × 2.44”
Main crystal size: 5.8 × 4.2 cm = 2.28” × 1.65”