title: Distribution of Atoms in High Chalcocite, Cu2S.
abstract: In spite of its simple composition, the structure of chalcocite, CU(2)S, has long defied analysis. In high chalcocite the sulfur atoms are in hexagonal close-packing, while three varieties of copper atoms, with four-fold, three-fold, and two-fold coordinations respectively, are in disorder in the interstices.
authors.forename: M J
authors.initials: MJ
authors.lastname: Buerger
authors.forename: B J
authors.initials: BJ
authors.lastname: Wuensch