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Lewis Cliff 88484
Basic information Name: Lewis Cliff 88484
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88484
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 8.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(2)  (1991)  LL3
Meteoritical Bulletin:  MB 76  (1994)  LL3.6
NHM Catalogue:  5th Edition  (2000)  LL3.6
MetBase:  v. 7.1  (2006)  LL3.6
Recommended:  LL3.6    [explanation]

This is 1 of 21 approved meteorites classified as LL3.6.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5213
Writeuphelp
Writeup from AMN 14(2):

Sample No.: LEW88484

Location: Lewis Cliff

Field Number: 5213

Dimensions (cm): 1.8 x 1.6 x 1.2

Weight (g): 8.4

Meteorite Type: LL3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

LEW88484 is a weathered specimen with 90% of its surface covered by fusion crust. The interior is brown in some areas and yellowish-gray in others. Inclusions are visible, as are metal blebs.

 

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 small amount of finely granular matrix which contains accessory amounts of nickel-iron and troilite. Weathering is extensive, with limonitic staining and areas of brown limonite throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa6-32, mean Fa22 (CV FeO is 32); pyroxene, Fs4-16. The small amount of nickel-iron suggests LL group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an LL3 chondrite estimated LL3.6).

 

Data from:
  MB76
  Table 2
  Line 4331:
Origin or pseudonym:Lower Ice Tongue
Mass (g):8.4
Class:LL3.6
Weathering grade:B/C
Fayalite (mol%):6-32
Ferrosilite (mol%):4-16
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' 53"S, 161° 24' 4"E)
Note: the NHM and MetBase coordinates are 5.3 km apart

Statistics:
     This is 1 of 41899 approved meteorites from Antarctica (plus 3802 unapproved names)
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