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Lewis Cliff 88536
Basic information Name: Lewis Cliff 88536
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88536
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(2)  (1991)  LL3
Meteoritical Bulletin:  MB 76  (1994)  LL3.5
NHM Catalogue:  5th Edition  (2000)  LL3.5
MetBase:  v. 7.1  (2006)  LL3.5
Recommended:  LL3.5    [explanation]

This is 1 of 22 approved meteorites classified as LL3.5.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5381
Writeuphelp
Writeup from AMN 14(2):

Sample No.: LEW88536

Location: Lewis Cliff

Field Number: 5381

Dimensions (cm): 1.5 x 1 x 0.7

Weight (g): 2.6

Meteorite Type: LL3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Black fusion crust with orangish oxidation haloes covers 95% of this stone. Abundant inclusions/chondrules were exposed when this unequilibrated chondrite was cleaved. The matrix is brown to black in color.

 

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 fine-grained dark matrix which contains a little nickel-iron and troilite. Brown limonitic staining pervades the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa3-22, mean Fa13 (CV FeO is 45); pyroxene, Fs2-15. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron LL group, hence the meteorite is classified as an LL3 chondrite (estimated LL3.5).

 

Data from:
  MB76
  Table 2
  Line 4380:
Origin or pseudonym:Lower Ice Tongue
Mass (g):2.6
Class:LL3.5
Weathering grade:C
Fayalite (mol%):3-22
Ferrosilite (mol%):2-15
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° 15' 4"S, 161° 26' 39"E)
Note: the NHM and MetBase coordinates are 5.4 km apart

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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