Pyrite with Quartz

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

Specimen size: 6.2 × 5.6 × 4.2 cm = 2.44” × 2.20” × 1.65”
Main crystal size: 1.5 × 1.3 cm = 0.59” × 0.51”