Siderite with Calcite and Sphalerite

Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí Department  Bolivia

Specimen size: 2.6 × 2.5 × 1.7 cm = 1.02” × 0.98” × 0.67”
Main crystal size: 2 × 1.4 cm = 0.79” × 0.55”