- Chalcopyrite, Galena and Quartz
- Naica, Chihuahua, Mexico
- Cabinet, 10.4 x 7.8 x 5.8 cm
- Ex. Richard Heck
Emplaced on massive sulfides are splendent, brassy yellow crystals of chalcopyrite to 2 cm in length along with drusy clusters of lustrous, white quartz. Additionally, there are a few crystals, to 1 cm across, of lustrous, battleship gray, galena. very bright and sharp, this is a beautiful specimen.