Twinned Stannite with Zinkenite

San José Mine, Oruro City, Cercado Province, Oruro Department  Bolivia (10/2004)

Specimen size: 4 × 2.3 × 1.7 cm = 1.57” × 0.91” × 0.67”
Main crystal size: 2.1 × 1.4 cm = 0.83” × 0.55”