| Material name | Cinnabar | |||||
| Composition | HgS | |||||
| Chemical formula weight | 232.66 | |||||
| System | Trigonal | |||||
| Temperature (ºC) | r.t. | |||||
| a (Å), b (Å), c (Å) | 4.145(2) | 4.145(2) | 9.496(2) | |||
| α (deg), β (deg), γ (deg) | 90 | 90 | 120 | |||
| Unit cell volume (Å3) | 141.2(2) | |||||
| Calculated density (g/㎝3) | 8.21 | |||||
| Z | 3 | |||||
| Space group | P3221 (No.154) | |||||
| atom | site | g | x/a | y/b | z/c | B (Å2) |
| Hg | 3a | 1 | 0.7198(5) | 0 | 1/3 | 2.2 |
| S | 3b | 1 | 0.489(3) | 0 | 5/6 | 1.6 |
| Comment | B values were calculated on the basis of βij values in the reference. | |||||
Reference: P. Auvray and F. Genet, Bulletin de la Societe Francaise de Mineralogie et de Cristallographie, 96, 218 (1973).