Galena (spinel-law twinning) with Quartz

Pachapaqui mining district, Pachapaqui, Aquia District, Bolognesi Province, Ancash Department  Peru

Specimen size: 10.7 × 6.7 × 4.9 cm = 4.21” × 2.64” × 1.93”
Main crystal size: 3 × 1.3 cm = 1.18” × 0.51”