| Material name | Olivine (Forsterite) | |||||
| Composition | (Mg0.9Fe0.1)2SiO4 | |||||
| Chemical formula weight | 147.00 | |||||
| System | Orthorhombic | |||||
| Temperature (ºC) | r.t. | |||||
| a (Å), b (Å), c (Å) | 4.762 | 10.225 | 5.994 | |||
| α (deg), β (deg), γ (deg) | 90 | 90 | 90 | |||
| Unit cell volume (Å3) | 291.9 | |||||
| Calculated density (g/㎝3) | 3.34 | |||||
| Z | 4 | |||||
| Space group | Pbnm (No.62) | |||||
| atom | site | g | x/a | y/b | z/c | B (Å2) |
| Mg1 | 4a | 0.9 | 0 | 0 | 0 | 0.33(3) |
| Fe1 | 4a | 0.1 | 0 | 0 | 0 | 0.33(3) |
| Mg2 | 4c | 0.9 | 0.98975(29) | 0.27743(16) | 1/4 | 0.36(3) |
| Fe2 | 4c | 0.1 | 0.98975(29) | 0.27743(16) | 1/4 | 0.36(3) |
| Si | 4c | 1 | 0.42693(27) | 0.09434(13) | 1/4 | 0.20(3) |
| O1 | 4c | 1 | 0.76580(72) | 0.09186(36) | 1/4 | 0.35(5) |
| O2 | 4c | 1 | 0.22012(72) | 0.44779(36) | 1/4 | 0.42(5) |
| O3 | 8d | 1 | 0.27810(50) | 0.16346(25) | 0.03431(46) | 0.41(5) |
Reference: J.D. Birle, G.V. Gibbs, P.B. Moore, and J.V. Smith, American Mineralogist, 53, 807 (1968).