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Elephant Moraine 99443
Basic information Name: Elephant Moraine 99443
     This is an OFFICIAL meteorite name.
Abbreviation: EET 99443
Observed fall: No
Year found: 1999
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.4 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Howardite
Antarctic Meteorite Newsletter:  AMN 24(1)  (2001)  Howardite
Meteoritical Bulletin:  MB 85  (2001)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 392 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from AMN 24(1):
Sample No.: EET 99443
Location: Elephant Moraine
Field No.: 12348
Dimensions (cm):   2.0x1.0x0.5
Weight (g): 2.448
Meteorite Type: Howardite
    EET99443
 
Macroscopic Description: Kathleen McBride
The interior is a medium gray matrix that contains some rusty halos and minor metal. Light gray inclusions are present.

Thin Section (, 2) Description: Tim McCoy and Linda Welzenbach

EET 99443 - Plane-Polarized Light EET 99443 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light
The section exhibits isolated pyroxene and plagioclase grains up to 0.5 mm. The section contains one part in which the groundmass is finely comminuted pyroxene and plagioclase grains, while the groundmass in the other is a fine-grained, lath-like structure suggestive of an impact melt. Pyroxene (Fs24-52Wo2-40) includes low-FeO orthopyroxene, moderate FeO pigeonite and low-FeO augite. Plagioclase exhibits a range of compositions (An86-95Or0-1). The meteorite is a howardite.

Data from:
  MB85
  Table A1
  Line 63:
Origin or pseudonym:Main icefield
Mass (g):2.4
Class:How
Weathering grade:A/B
Ferrosilite (mol%):24-52
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 24(1) (2001), JSC, Houston
Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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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 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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