| NN | Card | Specie | Formula | Space Group |
|---|---|---|---|---|
| 1. | 1800 | [1], t-graphite | C | P 6(3)/mmc |
| 2. | 7341 | [2], t-graphite | C | P 6(3)/mmc |
| 3. | 8371 | [3], mathematical model | C | P 6(3)mc |
| 4. | 8372 | [4], mathematical model | C | C mma |
| 5. | 8373 | [5], mathematical model | C | C mmm |
| 6. | 8374 | [6], mathematical model | C | P cca |