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Elephant Moraine 83235
Basic information Name: Elephant Moraine 83235
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83235
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 255 g
Antarctic Meteorite Newsletter:  AMN 8(1)  (1985)  Basaltic achondrite
AMN 13(1)  (1990)  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 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeup from AMN 8(1):

Sample No.: EET83235

Location: Elephant Moraine

Weight (g): 254.6

Field No.: 2861

Dimensions (cm): 7 x 6 x 4

Meteorite Type: Basaltic Achondrite (?)


Macroscopic Description: Roberta Score

This specimen looks similar to the other 1983 Elephant Moraine eucrites except that it appears to be more weathered. A thick dark gray weathering rind is present.


Thin Section (,3) Description: Jeremy Delaney

This specimen has a very dark matrix that appears to have been produced by weathering as the section contains gypsum/anhydrite. One pyroxenite clast with two crystals up to 1-mm across may be a fragment of an orthopyroxenite, but shock modification has produced inclined extinction. This clast is unexsolved. The section contains abundant pigeonite clasts with micron scale exsolution. Feldspar clasts in this section have abundant evidence of shock. One mafic clast has a gabbroic texture and contains lathy tridymite (?) crystals over 1-mm long. Several dark glassy or extremely fine-grained clasts are present.

Data from:
  Table 2
  Line 1499:
Origin or pseudonym:Main icefield
Mass (g):254.6
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):26-54
Comments:79005 pairing group
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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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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 7"S, 157° 14' 25"E)
Note: the NHM and MetBase coordinates are 11.5 km apart

     This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names)
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