Pyrargyrite

St. Andreasberg mining area, Goslar District, Harz, Lower Saxony/Niedersachsen  Germany

Specimen size: 2.6 × 2.1 × 1.4 × cm = 1.02” × 0.83” × 0.55”
Main crystal size: 0.4 × 0.4 cm = 0.16” × 0.16”