Sphalerite with Arsenopyrite, Calcite and Magnetite

Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region  China (2013)

Specimen size: 5.5 × 5.5 × 2.5 cm = 2.17” × 2.17” × 0.98”
Main crystal size: 1.9 × 1.2 cm = 0.75” × 0.47”