Octahedral Pyrite

Quiruvilca Mine (La Libertad Mine), Quiruvilca District, Santiago de Chuco Province, La Libertad Department  Peru (±1983)

Specimen size: 6.5 × 5.9 × 3.9 cm = 2.56” × 2.32” × 1.54”
Main crystal size: 3.5 × 3.2 cm = 1.38” × 1.26”