Chalcopyrite with Quartz

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

Specimen size: 6.1 × 4.4 × 3.2 cm = 2.40” × 1.73” × 1.26”
Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”