| NN | Card | Specie | Formula | Space Group |
|---|---|---|---|---|
| 1. | 3976 | [1], normal | Mg2SiO4 | *F d3m |
| 2. | 3977 | [2], inverse | Mg2SiO4 | *F d3m |
| 3. | 3978 | [3], gamma, hydrous | (Mg,Si)2(Si,Mg)H0.30O4 | *F d3m |
| 4. | 5984 | [4], t-spinel, syn | Mg2SiO4 | *F d3m |
| 5. | 5985 | [5], t-spinel, syn | (Mg,Fe)2SiO4 | *F d3m |
| 6. | 5986 | [6], t-spinel, syn | (Mg,Fe)2SiO4 | *F d3m |
| 7. | 5987 | [7], t-spinel, syn | (Mg,Fe)2SiO4 | *F d3m |
| 8. | 7482 | [8], t-spinel, Ge-analogue | Mg2GeO4 | *F d3m |