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Lewis Cliff 88621
Basic information Name: Lewis Cliff 88621
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88621
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.5 g
Antarctic Meteorite Newsletter:  AMN 15(1)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.7
NHM Catalogue:  5th Edition  (2000)  L3.7
MetBase:  v. 7.1  (2006)  L3
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: 5519
Writeup from AMN 15(1):

Sample No.: LEW88621

Location: Lewis Cliff

Field Number: 5519

Dimensions (cm): 2.0 x 1.8 x 1.1

Weight (g): 7.5

Meteorite Type: L3 chondrite


Macroscopic Description: Robbie Marlow

Dull, frothy fusion crust covers 95% of this weathered meteorite. Any features present have been obliterated by oxidation.


Thin Section .2) Description Brian Mason

The section shows a.close-packed aggregate of chondrules and chondrule fragments, up to 1.8 mm across, in a fine-grained matrix of olivine and pyroxene with a small amount of nickel-iron and troilite. Extensive weathering is indicated by brown limonitic staining throughout the section.  Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa7-20, mean Fa16 (CV FeO is 24); pyroxene, Fs3-25. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron L group, hence the meteorite is classified an an L3 chondrite (estimated L3.7).


Data from:
  Table 2
  Line 4462:
Origin or pseudonym:Upper Ice Tongue
Mass (g):7.5
Weathering grade:C
Fayalite (mol%):7-20
Ferrosilite (mol%):3-25
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References: Published in Antarctic Meteorite Newsletter 15(1) (1992), 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° 16' 12"S, 161° 23' 42"E)
Note: the NHM and MetBase coordinates are 3.8 km apart

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