| Material name | Andradite | |||||
| Composition | Ca3Fe2(SiO4)3 | |||||
| Chemical formula weight | 508.17 | |||||
| System | Cubic | |||||
| Temperature (ºC) | 20 | |||||
| a (Å), b (Å), c (Å) | 12.063(1) | 12.063(1) | 12.063(1) | |||
| α (deg), β (deg), γ (deg) | 90 | 90 | 90 | |||
| Unit cell volume (Å3) | 1755 | |||||
| Calculated density (g/㎝3) | 3.85 | |||||
| Z | 8 | |||||
| Space group | Ia3d (No.230) | |||||
| atom | site | g | x/a | y/b | z/c | B (Å2) |
| Ca | 24c | 1 | 1/8 | 0 | 1/4 | 0.433(4) |
| Fe | 16a | 1 | 0 | 0 | 0 | 0.267(3) |
| Si | 24d | 1 | 3/8 | 0 | 1/4 | 0.267(6) |
| O | 96h | 1 | 0.03934(4) | 0.04860(4) | 0.65534(4) | 0.425(7) |
Reference: T. Armbruster and C.A. Geiger, European Journal of Mineralogy, 5, 59 (1993).