Tennantite with Quartz and Chalcopyrite

San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2013)

Specimen size: 4.6 × 3.2 × 1.7 cm = 1.81” × 1.26” × 0.67”
Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”