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Lewis Cliff 97221
Basic information Name: Lewis Cliff 97221
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 97221
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 48 g
NHM Catalogue:  5th Edition  (2000)  L3
Antarctic Meteorite Newsletter:  AMN 23(2)  (2000)  L3
Meteoritical Bulletin:  MB 85  (2001)  L3
MetBase:  v. 7.1  (2006)  L3
Recommended:  L3    [explanation]

This is 1 of 795 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 9218
Writeup from AMN 23(2):
Sample No.: LEW 97221
Location: Lewis Cliff
Dimensions (cm): 4.5x4.0x2.5
Weight (g): 47.963
Meteorite Type: L3 Chondrite

Macroscopic Description: Kathleen McBride
50% of the exterior of this ordinary chondrite has brown/black fusion crust with oxidation halos. The interior has a rusty matrix with light gray inclusions 1-3 mm in diameter. The meteorite is hard and coherent.

Thin Section (, 2) Description: Tim McCoy
LEW 97221 - Cross-Polarized Light The section exhibits a 7 by 10 mm clast of a highly metamorphosed ordinary chondrite in a matrix of much lower petrologic type. Mineral compositions range from Fa5-27, with most grains Fa25-26, and pyroxenes from Fs4-23. The meteorite is an L chondrite breccia with a type 6 clast in a matrix of type 3 material.

Data from:
  Table A1
  Line 133:
Origin or pseudonym:South Walcott Icefield
Mass (g):48
Weathering grade:B/C
Fayalite (mol%):5-27
Ferrosilite (mol%):4-23
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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° 25' 26"S, 161° 46' 44"E)
Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 17.5 km apart
Note: the MetBase and recommended coordinates are 17.8 km apart

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