| Eagle Station group | |
|---|---|
| — Group — | |
 Eagle Station meteorite, type specimen for the group | |
| Type | Stony-iron |
| Class | Pallasite |
| Composition | Meteoric iron,silicates |
| Total known specimens | 5 |
TheEagle Station group (abbreviated PES – Pallasite Eagle Station) is a set ofpallasite meteorite specimen that do not fit into any of the other defined pallasite groups. Inmeteorite classification, five meteorites have to be found, so they can be defined as their own group.[1] Currently, only five Eagle Station type meteorites have been found, which is just enough for a separate group.[2]
The Eagle Station group is named after theEagle Station meteorite, the type specimen of the group. It is in turn named afterEagle Station,Carroll CountyKentucky where it was found.[3]
The Eagle Station group has a composition similar toMain group pallasites. Diagnostic differences are that theolivine is richer iniron andcalcium. The group also has a distinctoxygen isotope signature.[1]
Themeteoric iron is similar to theIIF iron meteorites. This might indicate that Eagle station group and IIF formed close to each other in thesolar nebula.[1]
Thetrace elements in the phosphates of the Eagle Station group are distinct from other pallasites. Most pallasites are believed to be derived from thecore–mantle boundary. Trace elements indicate that the Eagle Station group came from shallower depths of their parent body.[4]
Only five specimen have been found so far:[2]
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