Chalcopyrite with Quartz

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

Specimen size: 7.8 × 4.3 × 3.4 cm = 3.07” × 1.69” × 1.34”
Main crystal size: 1.9 × 0.9 cm = 0.75” × 0.35”