| Atoms | site | x | y | z | rc | |
| Cu(1) | 12e | 0 | 0 | 0.31435 | 4.696 | 4.877 |
| Cu(2) | 24h | 0 | 0.22762 | 0.22762 | 4.809 | |
| Cu(3) | 48m | 0.12591 | 0.12591 | 0.28003 | 4.957 | |
| Cu(4) or Ge4+ | 8c | 1/4 | 1/4 | 1/4 | - | - |
| O(1) | 48j | 0.12990 | 0 | 0.31330 | 5.066 | 5.356 |
| O(2) | 48k | 0.12328 | 0.25270 | 0.25270 | 5.647 | |
| O(3) | 6b | 1/2 | 0 | 0 | - | - |
| Mean polyhedron radius R, weighted by individual electron numbers (Cu = 29, O = 8) | 4.981 | |||||