| IIAB | |
|---|---|
| — Group — | |
 The Sikhote-Alin is the largest IIAB meteorite. | |
| Compositional type | Iron |
| Structural classification | Hexahedrite to Octahedrite |
| Subgroups |
|
| Parent body | IIAB-IIG[1] |
| Composition | Meteoric iron (Kamacite + Taenite) |
| Total known specimens | 117 + 1 anomalous |
IIAB meteorites are a group of iron meteorites. Their structural classification ranges from hexahedrites to octahedrites.[2] IIABs have the lowest concentration of nickel of all iron meteorite groups.[3] Most iron meteorites are derived from the metallic planetary cores of their respective parent bodies, but in the case of the IIABs the metallic magma separated to form not only this meteorite group but also the IIG group.[1]
- ^ a b Wasson, John T.; Choe, Won-Hie (31 July 2009). "The IIG iron meteorites: Probable formation in the IIAB core". Geochimica et Cosmochimica Acta. 73 (16): 4879–90. doi:10.1016/j.gca.2009.05.062.
- ^ Weisberg, M.K.; McCoy, T.J.; Krot, A.N. (2006). "Systematics and Evaluation of Meteorite Classification". In Lauretta, D.S.; McSween, H.Y. Jr. (eds.). Meteorites and the early solar system II. University of Arizona Press. pp. 19–52. Bibcode:2006mess.book...19W. ISBN 978-0816525621.
- ^ Davis, A. M.; Holland, H.D.; Turekian, K.K. (2003). Treatise on geochemistry (1st ed.). Oxford: Elsevier Science. ISBN 0-08-043751-6.