Pyrite with Quartz and Sphalerite

Quiruvilca Mine (La Libertad Mine), Quiruvilca District, Santiago de Chuco Province, La Libertad Department  Peru

Specimen size: 10.9 × 6.5 × 6.2 cm = 4.29” × 2.56” × 2.44”
Main crystal size: 3.6 × 3.3 cm = 1.42” × 1.30”