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Elephant Moraine 83229
Basic information Name: Elephant Moraine 83229
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83229
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 313 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 8(1)  (1985)  Eucrite-pmict
Meteoritical Bulletin:  MB 76  (1994)  Eucrite-pmict
NHM Catalogue:  5th Edition  (2000)  Eucrite-pmict
MetBase:  v. 7.1  (2006)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 348 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 8(1):

Sample No.: EET83229

Location: Elephant Moraine

Weight (g): 312.9

Field No.: 2843

Dimensions (cm): 8 x 6 x 4

Meteorite Type: Polymict Eucrite

 

Macroscopic Description: Roberta Score

EET83229 looks similar to other 1983 Elephant Moraine eucrites with the exception of one large brown crystalline clast that has a dimension of 4 x 3 x 1.2 cm.

 

Thin Section (,5) Description: Jeremy Delaney

Typical polymict achondrite breccia with many pyroxene, plagioclase and opaque mineral clasts and a few small lithic clasts. One lithic clast has a feldspar phenocryst, which is an unusual feature for a eucritic clast. Pyroxene clasts have various degrees of exsolution, clouding, and compositional dispersion. Feldspar clasts show variable amounts of shock modification. Many cracks filled with dark weathering products crosscut the thin section.

Data from:
  MB76
  Table 2
  Line 1494:
Origin or pseudonym:Main icefield
Mass (g):312.9
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):31-55
Comments:79004 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 8(1) (1985), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 1"S, 157° 14' 11"E)
Note: the NHM and MetBase coordinates are 11.3 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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