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Lewis Cliff 88286
Basic information Name: Lewis Cliff 88286
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88286
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.5
NHM Catalogue:  5th Edition  (2000)  L3.5
MetBase:  v. 7.1  (2006)  L3.5
Recommended:  L3.5    [explanation]

This is 1 of 95 approved meteorites classified as L3.5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 6003
Writeuphelp
Writeup from AMN 15(2):

Sample No.: LEW88286

Location: Lewis Cliff

Field Number: 6003

Dimensions (cm): 2.5 x 0.9 x 0.7

Weight (g): 3.9

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite,

Pitted, dull, brown fusion crust covers most of this chondrite. Abundant chondrules/inclusions are present in the weathered dark matrix. Some metal was noted.

 

Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 1.8 mm across; most of the chondrules are rimmed with black opaque material. The matrix consists of finely granular olivine and pyroxene with a little nickel-iron and troilite. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa3-34, mean Fa18 (CV FeO is 48); pyroxene, Fs2-24. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.5).

 

Data from:
  MB76
  Table 2
  Line 4140:
Origin or pseudonym:Lower Ice Tongue
Mass (g):3.9
Class:L3.5
Weathering grade:B/C
Fayalite (mol%):3-34
Ferrosilite (mol%):2-24
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(2) (1992), 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' 34"S, 161° 29' 20"E)
Note: the NHM and MetBase coordinates are 6.4 km apart

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