- Chalcocite, Tennantite
- Cabinet, 10.3 x 5.9 x 3.8 cm
- Geevor Mine, Pendeen, Botallack - Pendeen Area, St Just District, Cornwall, England, UK
On massive, black chalcocite and tennantite ore are a few sparkling, splendent, black crystals of chalcocite, to 2.5 mm across. From the collection of James E. Moresby White. Ex. Carnegie Museum Collection.