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Lewis Cliff 87284
Basic information Name: Lewis Cliff 87284
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87284
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 38.6 g
Antarctic Meteorite Newsletter:  AMN 12(3)  (1989)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.6
NHM Catalogue:  5th Edition  (2000)  L3.6
MetBase:  v. 7.1  (2006)  L3.5
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  L3.5
Recommended:  L3.5    [explanation]

This is 1 of 95 approved meteorites classified as L3.5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 4702
Writeup from AMN 12(3):

Sample No.: LEW87284

Location: Lewis Cliff

Dimensions (cm): 5x3x15

Field Number: 4702

Weight (g): 38.6

Meteorite Type: L3 chondrite


Macroscopic Description: Cecilia Satterwhite

Fusion crust covers almost the entire specimen. The exposed interior contains dark matrix with abundant light colored inclusions; the largest is 0.5 cm in the longest dimension.


Thin Section (,2) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 2.5 mm across, in a black matrix which contains some troilite and a little nickel-iron. A variety of chondrule types is present, including granular and porphyritic olivine and fine-grained radiating pyroxene. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-16, mean Fa11 (CV FeO is 36); pyroxene, Fs3-29. The small 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 L3.6).

Data from:
  Table 2
  Line 3848:
Origin or pseudonym:Upper Walcott Névé
Mass (g):38.6
Weathering grade:A
Fayalite (mol%):1-16
Ferrosilite (mol%):3-29
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References: Published in Antarctic Meteorite Newsletter 12(3) (1989), 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° 26' 40"S, 161° 23' 46"E)
Note: the NHM and recommended coordinates are 18.3 km apart

     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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