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Lewis Cliff 88336
Basic information Name: Lewis Cliff 88336
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88336
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 29.8 g
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: 6070
Writeup from AMN 14(2):

Sample No.: LEW88336

Location: Lewis Cliff

Field Number: 6070

Dimensions (cm): 3 x 2.2 x 2

Weight (g): 29.8

Meteorite Type: LL3 chondrite


Macroscopic Description: Cecilia Satterwhite

Black, pitted fusion crust covers 85% of this unequilibrated chondrite. Cleaving LEW88336 revealed an interior which ranges in color from dark gray to red-brown. Several inclusions are present but one notable one is 5 mm in longest dimension, gray in color, and fine-grained.


Thin Section (,3) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 3.1 mm across, in a dark matrix consisting largely of finely granular olivine and pyroxene with accessory amounts of troilite and nickel-iron. A variety of chondrule types is present, mainly granular and porphyritic olivine and olivine-pyroxene, but also some radiating to cryptocrystalline pyroxene chondrules. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa4-41, mean Fa23 (CV FeO is 43); pyroxene, Fs3-17. The small amount of nickel-iron suggests LL group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an LL3 chondrite (estimated LL3.5).


Data from:
  Table 2
  Line 4190:
Origin or pseudonym:Lower Ice Tongue
Mass (g):29.8
Weathering grade:B/C
Fayalite (mol%):4-41
Ferrosilite (mol%):3-17
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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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     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 14' 19"S, 161° 25' 31"E)
Note: the NHM and MetBase coordinates are 6.3 km apart

     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)
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