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Lewis Cliff 88594
Basic information Name: Lewis Cliff 88594
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88594
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 5.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  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: 5306
Writeuphelp
Writeup from AMN 15(2):

Sample No.: LEW88594

Location: Lewis Cliff

Field Number: 5306

Dimensions (cm): 2 x 2 x 0.5

Weight (g): 5.4

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite,

Minor amounts of fusion crust remain on this extensively weathered meteorite. The interior matrix is brown to black with a few weathered inclusions. Some metal is present.

 

Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 3 mm across, in a small amount of black matrix containing a little nickel-iron and troilite. Minor weathering is indicated by limonitic staining around metal grains. Microprobe analyses show olivine and pyroxene of variable compositions: olivine, Fa6-28, mean Fa22 (CV FeO is 22); pyroxene, Fs10-21 The variability of olivine and pyroxene compositions indicates type 3, and the small amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.7).

 

Data from:
  MB76
  Table 2
  Line 4436:
Origin or pseudonym:Lower Ice Tongue
Mass (g):5.4
Class:L3.7
Weathering grade:C
Fayalite (mol%):6-28
Ferrosilite (mol%):10-21
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° 15' 7"S, 161° 24' 26"E)
Note: the NHM and MetBase coordinates are 5 km apart

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