Chalcopyrite on Quartz and with Calcite

El Bolivar Mine, Piedras Verdes (Triguito), Municipio Urique, Chihuahua  Mexico (10/2018)

Specimen size: 9 × 6.4 × 5.1 cm = 3.54” × 2.52” × 2.01”
Main crystal size: 2.3 × 2.1 cm = 0.91” × 0.83”