Bournonite with Sphalerite, Pyrite after Pyrrhotite and Galena

Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2019)

Specimen size: 9.7 × 4.6 × 2.8 cm = 3.82” × 1.81” × 1.10”
Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”