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Lewis Cliff 88452
Basic information Name: Lewis Cliff 88452
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88452
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 13.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(2)  (1991)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5295
Writeuphelp
Writeup from AMN 14(2):

Sample No.: LEW88452

Location: Lewis Cliff

Field Number: 5295

Dimensions (cm): 2.2 x 1.8 x 1.5

Weight (g): 13.4

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

One quarter of the exterior is not covered with dull black fusion crust. The black interior matrix contains abundant weathered chondrules. Metal is obvious.

 

Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 1.5 mm across, in a granular matrix of olivine and pyroxene with small amounts of troilite and nickel-iron. Weathering is moderate, with some limonitic staining and small areas of brown limonite. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa2-35, mean Fa15 (CV FeO is 68); pyroxene, Fs1-25. The amount of nickel-iron suggests L group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an L3 chondrite (estimated L3.4).

 

Data from:
  MB76
  Table 2
  Line 4299:
Origin or pseudonym:Lower Ice Tongue
Mass (g):13.4
Class:L3.4
Weathering grade:B/C
Fayalite (mol%):2-35
Ferrosilite (mol%):1-25
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 14(2) (1991), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 14' 56"S, 161° 25' 33"E)
Note: the NHM and MetBase coordinates are 5.4 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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