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Lewis Cliff 97216
Basic information Name: Lewis Cliff 97216
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 97216
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 23 g
NHM Catalogue:  5th Edition  (2000)  L3.7
Antarctic Meteorite Newsletter:  AMN 23(2)  (2000)  L3
Meteoritical Bulletin:  MB 85  (2001)  L3.7
MetBase:  v. 7.1  (2006)  L3.7
Recommended:  L3.7    [explanation]

This is 1 of 51 approved meteorites classified as L3.7.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 9224
Writeup from AMN 23(2):
Sample No.: LEW 97216
Location: Lewis Cliff
Dimensions (cm): 4.7x2.5x1.0
Weight (g): 22.995
Meteorite Type: L3 Chondrite (estimated 3.7)

Macroscopic Description: Cecilia Satterwhite
The exterior of this meteorite has black fusion crust over 75% of its surface with oxidation haloes visible. The interior is dark gray to black with oxidation scattered and metal present.

Thin Section (, 2) Description: Tim McCoy
LEW 97216 - Cross-Polarized Light The section exhibits numerous well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite. Shock effects, including some flattening of chondrules, are evident. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is weathered. Silicates are unequilibrated; olivines range from Fa9-26, with most grains Fa24-26, and pyroxenes from Fs3-4. The meteorite is an L3 chondrite (estimated subtype 3.7).

Data from:
  Table A1
  Line 128:
Origin or pseudonym:South Walcott Icefield
Mass (g):23
Weathering grade:B/C
Fayalite (mol%):9-26
Ferrosilite (mol%):3-4
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° 25' 34"S, 161° 46' 1"E)
Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 17.6 km apart
Note: the MetBase and recommended coordinates are 18 km apart

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