| NN | Card | Specie | Formula | Space Group |
|---|---|---|---|---|
| 1. | 1131 | [1] | CaB2Si2O8 | P nma |
| 2. | 1125 | [2], at 25oC | CaB2Si2O8 | P nam |
| 3. | 1126 | [3], at 208oC | CaB2Si2O8 | P nam |
| 4. | 1127 | [4], at 407oC | CaB2Si2O8 | P nam |
| 5. | 1128 | [5], at 618oC | CaB2Si2O8 | P nam |
| 6. | 1129 | [6], at 817oC | CaB2Si2O8 | P nam |
| 7. | 1130 | [7], at 910oC | CaB2Si2O8 | P nam |
| 8. | 6508 | [8], analogue | KBSi3O8 | P nam |