Chalcopyrite epitactic Tetrahedrite with Dolomite

Clausthal-Zellerfeld, Goslar District, Harz, Lower Saxony/Niedersachsen  Germany

Specimen size: 4.6 × 3.5 × 2 cm = 1.81” × 1.38” × 0.79”
Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”