| IVB meteorites | |
|---|---|
| — Group — | |
 Tlacotepec is one of 14 known IVB specimens; in contrast to most IVBs it is an octahedrite instead of an ataxite | |
| Type | Iron |
| Structural classification | Most are ataxites (without structure) but show microscopic Widmanstätten patterns |
| Class | Magmatic |
| Subgroups |
|
| Parent body | IVB |
| Composition | Meteoric iron (kamacite, taenite & tetrataenite); low in volatile elements, high in nickel & refractory elements |
| Total known specimens | 14 |
IVB meteorites are a group of ataxite iron meteorites classified as achondrites.[1] The IVB group has the most extreme chemical compositions of all iron meteorites, meaning that examples of the group are depleted in volatile elements and enriched in refractory elements compared to other iron meteorites.[2]
- ^ M. K. Weisberg; T. J. McCoy, A. N. Krot (2006). "Systematics and Evaluation of Meteorite Classification" (PDF). In D. S. Lauretta; H. Y. McSween, Jr. (eds.). Meteorites and the early solar system II. Tucson: University of Arizona Press. pp. 19–52. ISBN 978-0816525621. Retrieved 15 December 2012.
- ^ Campbell, Andrew J.; Humayun, Munir (1 October 2005). "Compositions of group IVB iron meteorites and their parent melt". Geochimica et Cosmochimica Acta. 69 (19): 4733–4744. Bibcode:2005GeCoA..69.4733C. CiteSeerX 10.1.1.573.5611. doi:10.1016/j.gca.2005.06.004.