Crystal Structure of Tetra-ferri-annite
| Id | 9002140 |
| Mineral name | Tetra-ferri-annite |
| a (Å) | 5.486 |
| b (Å) | 9.506 |
| c (Å) | 10.818 |
| α (°) | 90 |
| β (°) | 99.67 |
| γ (°) | 90 |
| V (Å3) | 556.142 |
| Space group | C 1 2/m 1 |
| Temperature (K) | 296.15 |
Publication: American Mineralogist (1999) 84, 325-332