Figure 1
Cronstedtite-1M, reciprocal lattice sections h0l, h3hl and (monoclinic indexing), containing sharp subfamily reflections only. Reciprocal unit-cell vectors are indicated. Indices of reciprocal lattice rows as well as of some important reflections are indicated. Sections are rotated along c* by 60°. The distribution of diffraction spots reflects the rhombohedral symmetry of the subfamily structure of the A subfamily. |