Chalcopyrite with Sphalerite and Dolomite

Picher Field, Tri-State District, Ottawa County, Oklahoma  USA

Specimen size: 11.4 × 8.6 × 4.2 cm = 4.49” × 3.39” × 1.65”
Main crystal size: 3.2 × 2.5 cm = 1.26” × 0.98”