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Lewis Cliff 97225
Basic information Name: Lewis Cliff 97225
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 97225
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.1 g
NHM Catalogue:  5th Edition  (2000)  Ureilite
Antarctic Meteorite Newsletter:  AMN 23(2)  (2000)  Ureilite
Meteoritical Bulletin:  MB 85  (2001)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 610 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Field number: 11054
Writeup from AMN 23(2):
Sample No.: LEW 97225
Location: Lewis Cliff
Dimensions (cm): 1.0x0.75x1.25
Weight (g): 2.106
Meteorite Type: Ureilite

Macroscopic Description: Kathleen McBride
Smooth brown/black fusion crust completely covers the exterior surface. The interior has a yellowish matrix with heavy oxidation and rust areas.

Thin Section (, 2) Description: Tim McCoy
LEW 97225 - Cross-Polarized Light The section consists of an aggregate of large olivine and pyroxene grains up to 2 mm across. Individual olivine grains are rimmed by carbon-rich material containing traces of metal. Modest shock effects (e.g., planar fractures) are present. Olivine has cores of Fa21, with rims reduced to Fa11. Most pigeonite is Fs18Wo9 with a single rim value of Fs8Wo9. The meteorite is a ureilite.

Data from:
  Table A1
  Line 137:
Origin or pseudonym:Meteorite Moraine
Mass (g):2.1
Weathering grade:C
Fayalite (mol%):11-21
Ferrosilite (mol%):8-18
Search for specimens in the Smithsonian Institution collection (U.S.):   
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References: Published in Antarctic Meteorite Newsletter 23(2) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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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      

     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 16' 25"S, 161° 41' 2"E)
Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 6.8 km apart
Note: the MetBase and recommended coordinates are 2.2 km apart

     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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