Crystal chemical studies of the 5f-series of elements. X. Sulfides and oxysulfides

A number of sulfides and oxy-sulfides of 5f-elements and of cerium have crystal structures of known types as follows: NaCl-type: CeS, ThS, US, PuS; Sb₂S₃-type: Th₂S₃, U₂S₃, Np₂S₃; PbCl₂-type: ThS₂; PbFCl-type: ThOS, UOS, NpOS.