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Elephant Moraine 92025
Basic information Name: Elephant Moraine 92025
     This is an OFFICIAL meteorite name.
Abbreviation: EET 92025
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 18.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 17(1)  (1994)  Eucrite-br
Meteoritical Bulletin:  MB 79  (1996)  Eucrite-br
NHM Catalogue:  5th Edition  (2000)  Eucrite-br
MetBase:  v. 7.1  (2006)  Eucrite-mmict
Recommended:  Eucrite-br    [explanation]

This is 1 of 167 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 17(1):

Sample No.: EET92025; 92026

Location: Elephant Moraine

Dimensions (cm): 4.0 x 2.5 x 1.5; 3.5 x 2.5 x 1.5

Weight (g): 18.4; 17.0

Meteorite Type: Eucrite (brecciated)

 

Macroscopic Description: Carol Schwarz

Both fragments are similar in appearance with fusion crust covering 40-50% of their exterior surfaces. The fusion crust is black and very shiny in places. The interiors of both are a similar tannish-gray color and medium-grained. 92026 contains several 1-2 mm sized white plagioclase inclusions.

 

Thin Section (EET92025,2; 92026,2) Description: Brian Mason

The sections are so similar a single description will suffice; the meteorites are probably paired. They show a brecciated texture, with gabbroic clasts up to 3 mm across and pyroxene and plagioclase grains up to 0.6 mm in a comminuted groundmass of these minerals. The pyroxene is pigeonite with a moderate range in composition: Wo10-17, Fs42-55, En28-47, and clustered around Wo13Fs49; plagioclase composition is An88-94; a silica polymorph, probably tridymite, is present in small amounts. The meteorite is a monomict eucrite (brecciated).

 

Data from:
  MB79
  Table 2
  Line 225:
Origin or pseudonym:Northern Ice Patch
Mass (g):18.4
Class:Eu "br"
Weathering grade:A/B
Ferrosilite (mol%):44-48
Comments:92025 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 17(1) (1994), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 3' 8"S, 156° 15' 40"E)
Note: the NHM and MetBase coordinates are 28.3 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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