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Elephant Moraine 96040
Basic information Name: Elephant Moraine 96040
     This is an OFFICIAL meteorite name.
Abbreviation: EET 96040
Observed fall: No
Year found: 1996
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 276 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 21(1)  (1998)  H4
Meteoritical Bulletin:  MB 82  (1998)  H4
NHM Catalogue:  5th Edition  (2000)  H4
MetBase:  v. 7.1  (2006)  H4-an
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  H4-anom
Recommended:  H4-an    [explanation]

This is 1 of 13 approved meteorites classified as H4-an.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 21(1):

Sample No.:

EET96031,
EET96037,
EET96040,
EET96047

Location:

Elephant Morraine

Dimensions (cm):

7.5x5.0x4.0;
8.5x6.5x3.0;
7.5x3.0x5.5;
6.0x4.0x4.0

Weight (g):

414;
325.7;
276.2;
139.41

Meteorite Type:

H4 Chondrites

EET96040 Thumbnail

Macroscopic Description: Kathleen McBride
The exteriors of these chondrites are covered with thin, patchy black fusion crust. They all have iridescent oxidation haloes and a few fractures. The interior is fine grained with some dark gray matrix visible. Some rust colored grains and metal are present. These meteorites are hard and coherent.

Thin Section (EET96031,2; 96037,2; 96042,2; 96047,2) Description: Tim McCoy

EET96031 - Cross-Polarized Ligth
EET96031
These four meteorites are likely paired and a common description is given. The sections show a close-packed aggregate of chondrules (usually less than 1 mm across), chondrule fragments and mineral grains in a dark matrix with abundant metal and troilite. The meteorite is moderately weathered and shocked. Polysynthetically twinned pyroxene is common. All four meteorites have olivine (Fa15-16) and pyroxene compositions (Fs13-14) which are below the range typical for H chondrites and similar to a small group of chondrites such as Willaroy (1993, GCA 57, 1867). The meteorites are unusual H4 chondrites.
Data from:
  MB82
  Table A1
  Line 68:
Origin or pseudonym:Meteorite City
Mass (g):276.2
Class:H4
Weathering grade:B/C
Fayalite (mol%):16
Ferrosilite (mol%):14
Comments:96031 pairing group
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
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Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 21(1) (1998), JSC, Houston
Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA   
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 11'S, 157° 10'E)

Statistics:
     This is 1 of 38674 approved meteorites from Antarctica (plus 5051 unapproved names)
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