Bournonite with Galena, Siderite, Quartz and Calcite

Pfaffenberg Mine, Neudorf, Harzgerode mining district, Harz, Saxony-Anhalt/Sachsen-Anhalt  Germany

Specimen size: 8.4 × 6.6 × 3.1 cm = 3.31” × 2.60” × 1.22”
Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”