Octahedral Pyrite

Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (±1985)

Specimen size: 13.2 × 10 × 5.3 cm = 5.20” × 3.94” × 2.09”
Main crystal size: 4.2 × 3 cm = 1.65” × 1.18”