Chalcopyrite with Calcite

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

Specimen size: 7.2 × 4.6 × 4.2 cm = 2.83” × 1.81” × 1.65”
Main crystal size: 2 × 2 cm = 0.79” × 0.79”