Crystal Structure of Tetra-ferri-annite
| Id | 9002143 |
| Mineral name | Tetra-ferri-annite |
| a (Å) | 5.480 |
| b (Å) | 9.500 |
| c (Å) | 10.907 |
| α (°) | 90 |
| β (°) | 99.60 |
| γ (°) | 90 |
| V (Å3) | 559.867 |
| Space group | C 1 2/m 1 |
| Temperature (K) | 569.15 |
Publication: American Mineralogist (1999) 84, 325-332