NN | Card | Specie | Formula | Space Group |
---|---|---|---|---|
1. | 1503 | [1], t-columbite-tantalite | Nb2(Fe,Mn)O6 | P bcn |
2. | 1499 | [2], t-columbite-tantalite | FeNb2O6 | P bcn |
3. | 1500 | [3], t-columbite-tantalite, at 100oK | (Nb,Ta,Fe)2(Fe,Nb,Ta)O6 | P bcn |
4. | 1501 | [4], t-columbite-tantalite, at 293oK | (Nb,Ta,Fe)2(Fe,Nb,Ta)O6 | P bcn |
5. | 1502 | [5], t-columbite-tantalite | (Fe,Nb)(Nb,Ta)2O6 | P bcn |