NN | Card | Specie | Formula | Space Group |
---|---|---|---|---|
1. | 1919 | [1], t-corundum | Fe2O3 | R 3(-)c |
2. | 1920 | [2], t-corundum | Fe2O3 | R 3(-)c |
3. | 1921 | [3], alpha, t-corundum, at 313oC | Fe2O3 | R 3(-)c |
4. | 1922 | [4], alpha, t-corundum, at 517oC | Fe2O3 | R 3(-)c |
5. | 1923 | [5], alpha, t-corundum, at 779oC | Fe2O3 | R 3(-)c |