- Chalcopyrite, Sphalerite, Galena
- Gunnison Co., Colorado, USA
- Small Cabinet, 7.2 x 4.7 x 4.6 cm
An excellent, very showy, old-time combination sulfide specimen from the Mullane Collection and an unknown mine in Gunnison County of Colorado. Several large, lustrous, golden-brassy, chalcopyrite crystals to 2.5 cm are nicely set in lustrous, black sphalerite crystals and massive, blocky, gray galena. There is some contacting on the sides, but this remains a very highly representative, showy and rich copper-zinc-lead ore specimen from a mineral-rich Colorado county.