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Lewis Cliff 88006
Basic information Name: Lewis Cliff 88006
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88006
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 27 g
Antarctic Meteorite Newsletter:  AMN 13(2)  (1990)  Ureilite
Meteoritical Bulletin:  MB 76  (1994)  Ureilite
NHM Catalogue:  5th Edition  (2000)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 630 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Field number: 5262
Writeup from AMN 13(2):

Sample No. LEW88006

Location: Lewis Cliff

Dimensions (cm): 3x2.5x2

Field Number: 5262

Weight (g): 27.0

Meteorite Type: Ureilite


Macroscopic Description: Roberta Score

LEW88006 is semi-rounded with fusion crust covering 95% of the exterior surfaces. Fusion crust is generally shiny black, but is frothy and pitted on the bottom surface. Breaking this specimen revealed an interior typical of ureilites that is brownish in color and crystalline with many grains showing crystal faces.


Thin Section (,4) Description: Brian Mason

The section shows an aggregate of olivine and pyroxene, as rounded to subhedral grains 0.1-3.0 mm in maximum dimension. The grains are rimmed with black carbonaceous material, which contains trace amounts of nickel-iron and troilite. Microprobe analyses show olivine and pyroxene of uniform composition: olivine, Fa18 (CaO 0.35%, Cr2O3 0.70%); pyroxene, Wo8Fs16 (Cr2O3 1.2%). The meteorite is a ureilite; it appears to be essentially unshocked.


Data from:
  Table 2
  Line 3863:
Origin or pseudonym:Upper Ice Tongue
Mass (g):27
Weathering grade:B
Fayalite (mol%):18
Ferrosilite (mol%):16
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References: Published in Antarctic Meteorite Newsletter 13(2) (1990), 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' 54"S, 161° 20' 29"E)
Note: the NHM and MetBase coordinates are 2.9 km apart

     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)
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