Bismuthinite with Marcasite

Farallón Mine, Farallón Viejo vein, Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosí Department  Bolivia (2001)

Specimen size: 13 × 10 × 6.3 cm = 5.12” × 3.94” × 2.48”
Main crystal size: 2.1 × 0.6 cm = 0.83” × 0.24”