Figure 1
Projection of the 222-polybasite structure along the monoclinic b axis, emphasizing the succession of the [(Ag,Cu)6Sb2S7]2− A (A′) and [Ag9CuS4]2+ B (B′) module layers. Atoms Ag13 and Ag14 are highlighted (different colour) for comparison with Figs. 2 and 3. |