PES pallasite meteorite
A rock classification type
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Name:
The acronym PES was proposed by Wasson and Choi (2003) in substitution of the previously used EST and ESP.
A grouplet named for a pallasite that was found near Eagle Station, Kentucky, in 1880. They all contain highly fragmented olivines, intermixed with small, irregular olivine splinters, in a nickel-iron matrix. Although their mineral assemblage is similar to PMG pallasites, they have different metal and olivine (forsterite) compositions. In fact, the mean Ni content of the metal is higher, and olivine Fa contents are slightly higher (≈Fa20) than those in the Zaisho (Fa18.3), which has the highest Fa among PMG. The O-isotope composition of their olivine (forsterite) is a main parameter to separate the Eagle-Station pallasites (PES) and main-group pallasites (PMG). The mean PMG ∆17O (=δ17O-0.52·δ18O) value is -0.28 ± 0.06‰. The mean PES ∆17O value is much lower, ≈-4.6‰.
Meteoritical Society Code: Pallasite, PES
Unique Identifiers
Mindat ID:
49902
Long-form identifier:
mindat:1:1:49902:4
GUID
(UUID V4):
(UUID V4):
14486dfe-4a57-402f-a2f1-e48fc020446e
Classification of PES pallasite meteorite
- Rock
- Meteorite and other extra-terrestrial rock and sediment
- Meteorite
- Differentiated achondrite meteorite
- Pallasite meteorite
- PES pallasite meteorite
- Pallasite meteorite
- Stony-iron meteorite
- Pallasite meteorite
- PES pallasite meteorite
- Pallasite meteorite
- Differentiated achondrite meteorite
- Meteorite
- Meteorite and other extra-terrestrial rock and sediment
Mineralogy of PES pallasite meteorite
Essential minerals - these are minerals that are required within the classification of this rock:
Meteoritic Iron | Iron found as a constituent of meteorites. |
Olivine > Forsterite | Mg2SiO4 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Chromite | Fe2+Cr3+2O4 |
Schreibersite | (Fe,Ni)3P |
Troilite | FeS |
Synonyms of PES pallasite meteorite
Internet Links for PES pallasite meteorite
mindat.org URL:
https://www.mindat.org/min-49902.html
Please feel free to link to this page.
Please feel free to link to this page.
References for PES pallasite meteorite
Reference List:
Recorded finds for PES pallasite meteorite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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