Chalcopyrite with Quartz

Friedrich-Wilhelm Mine, Biersdorf, Daaden, Daaden-Herdorf, Altenkirchen District, Rhineland-Palatinate/Rheinland-Pfalz  Germany

Specimen size: 9.6 × 7.1 × 5.8 cm = 3.78” × 2.80” × 2.28”
Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”