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Phases of meteoritic iron [232]
| Mineral | Formula | Nickel (Mass-%) |
Crystal structure |
Notes |
|---|---|---|---|---|
| Antitaenite | γLow Spin-(Ni,Fe); Fe~3Ni | 20 to 40 | fcc | Only approved as a variety of taenite by the IMA. Low magnetic moment |
| Kamacite | α-(Fe,Ni); Fe ~ 0.9Ni ~ 0.1 | 5 to 10 | bcc | Same structure as ferrite |
| Taenite | γ-(Ni,Fe); Ni~0.5Fe~0.5 | 20 to 65 | fcc |
Same structure as austenite High magnetic moment |
| Tetrataenite | (FeNi) | 48 to 57 | Tetragonal | < 320 °C |
| Awaruite | Ni3Fe | ~ 1/3 | Cubic |
