Bournonite with Siderite and Pyrite

Víboras Mine, Machacamarca, Cornelio Saavedra, Potosí  Bolivia (2001)

Specimen size: 7.3 × 6.4 × 7.3 cm = 2.87” × 2.52” × 2.87”
Main crystal size: 4.4 × 3.1 cm = 1.73” × 1.22”