Pyrite with Sphalerite

Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru

Specimen size: 2.5 × 2.5 × 1.7 cm = 0.98” × 0.98” × 0.67”
Main crystal size: 2.5 × 1.3 cm = 0.98” × 0.51”