Sphalerite with Calcite, Quartz and Pyrite after Pyrrhotite

Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2021)

Specimen size: 10.7 × 7.2 × 5.8 cm = 4.21” × 2.83” × 2.28”
Main crystal size: 2.1 × 2 cm = 0.83” × 0.79”