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Lewis Cliff 87208
Basic information Name: Lewis Cliff 87208
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87208
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 34.5 g
Antarctic Meteorite Newsletter:  AMN 12(1)  (1989)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 4647
Writeup from AMN 12(1):

Sample No.: LEW 87208

Location: Lewis Cliff

Weight(g): 34.5

Field No.: 4647

Dimensions (cm): 4x3x1.5

Meteorite Type: L3 Chondrite


Macroscopic Description: Carol Schwarz

About 60% of this specimen is covered with black, frothy fusion crust. The interior has been moderately weathered but many chondrules are visible. One gray inclusion is 5 mm across.


Thin Section (,4) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 3 mm across, in a small amount of black matrix containing a few grains of nickel-iron and troilite. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, and cryptocrystalline pyroxene. Much of the pyroxene is polysynthetically twinned clinobronzite. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-19, mean Fa12 (CV FeO is 59); pyroxene, Fs0-27. 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 L3.4).

Data from:
  Table 2
  Line 3776:
Origin or pseudonym:Upper Walcott Névé
Mass (g):34.5
Weathering grade:B
Fayalite (mol%):1-19
Ferrosilite (mol%):0-27
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References: Published in Antarctic Meteorite Newsletter 12(1) (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° 27' 32"S, 161° 23' 56"E)
Note: the NHM and recommended coordinates are 19.9 km apart

     This is 1 of 43857 approved meteorites from Antarctica (plus 3802 unapproved names)
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