Calcite with Siderite

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

Specimen size: 5.1 × 4.3 × 4.5 cm = 2.01” × 1.69” × 1.77”
Main crystal size: 1.9 × 1.8 cm = 0.75” × 0.71”