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Lewis Cliff 88462
Basic information Name: Lewis Cliff 88462
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88462
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 8.1 g
Antarctic Meteorite Newsletter:  AMN 14(2)  (1991)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.7
NHM Catalogue:  5th Edition  (2000)  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: 5238
Writeup from AMN 14(2):

Sample No.: LEW88462

Location: Lewis Cliff

Field Number: 5238

Dimensions (cm): 1.8 x 1.6 x 1.7

Weight (g): 8.1

Meteorite Type: L3 chondrite


Macroscopic Description: Robbie Marlow

Smooth dark brown fusion crust covers 85% of this meteorite. A discontinuous weathering rind was exposed when LEW88462 was cleaved. The matrix is medium gray, contains numerous chondrules and ranges in oxidation from light to heavy.


Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.8 mm across, in a granular matrix of olivine and pyroxene with minor amounts of nickel-iron and troilite. A moderate degree of weathering is indicated by limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa7-18, mean Fa14 (CV FeO is 22); pyroxene, Fs3-23. 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 L3.7).


Data from:
  Table 2
  Line 4309:
Origin or pseudonym:Lower Ice Tongue
Mass (g):8.1
Weathering grade:B/C
Fayalite (mol%):7-18
Ferrosilite (mol%):3-23
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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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     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 15' 0"S, 161° 23' 18"E)
Note: the NHM and MetBase coordinates are 5 km apart

     This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names)
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