| NN | Card | Specie | Formula | Space Group |
|---|---|---|---|---|
| 1. | 12301 | [14], t-olivine, syn, at 10oK | Fe2SiO4 | P bnm |
| 2. | 12302 | [15], t-olivine, syn, at 100oK | Fe2SiO4 | P bnm |
| 3. | 12303 | [16], t-olivine, syn, at 373oK | Fe2SiO4 | P bnm |
| 4. | 12304 | [17], t-olivine, syn, at 873oK | Fe2SiO4 | P bnm |
| 5. | 12305 | [18], t-olivine, syn, at 1173oK | Fe2SiO4 | P bnm |
| 6. | 12306 | [19], t-olivine, syn, at 1453oK | Fe2SiO4 | P bnm |