Pyrite with Calcite

Eupel Mine, Niederhövels, Wissen, Flammersfeld, Altenkirchen (Westerwald), Siegerland, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 12.8 × 8.8 × 6.2 cm = 5.04” × 3.46” × 2.44”
Main crystal size: 1.2 × 1.2 cm = 0.47” × 0.47”