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Lewis Cliff 88201
Basic information Name: Lewis Cliff 88201
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88201
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 46.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 13(3)  (1990)  Ureilite
AMN 17(1)  (1994)  Ureilite-augite-bearing
Meteoritical Bulletin:  MB 76  (1994)  Ureilite-augite-bearing
NHM Catalogue:  5th Edition  (2000)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Field number: 5693
Writeuphelp
Writeup from AMN 13(3):

Sample No. LEW88201

Location: Lewis Cliff

Dimensions (cm): 3 x 3.2 x 2.5

Field Number: 5693

Weight (g): 46.4

Meteorite Type: Ureilite

 

Macroscopic Description: Cecilia Satterwhite

Shiny black and some frothy fusion crust covers this ureilite. One exterior surface has regmaglypts. The interior is bluish-black and has a crystalline texture. A small amount of evaporite deposit is present.

 

Thin Section (,2) Description: Brian Mason

This section shows an equigranular aggregate of olivine and pyroxene, as rounded to subhedral grains 0.3-0.6 mm across. The grains are rimmed with black carbonaceous material, which contains trace amounts of nickel-iron. (largely weathered to brown limonite) and troilite. Microprobe analyses show olivine and pyroxene of uniform composition: olivine, Fa8 (CaO 0.3%); pyroxene, Wo5Fs8. The meteorite is a ureilite; it is very similar in texture and mineral compositions to LEW 85440 and 88012, and the possibility of pairing should be considered.

 

Data from:
  MB76
  Table 2
  Line 4057:
Origin or pseudonym:Upper Ice Tongue
Mass (g):46.4
Class:Ur "aug"
Weathering grade:B/Ce
Fayalite (mol%):8
Ferrosilite (mol%):8
Comments:85440 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 13(3) (1990), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 16' 53"S, 161° 19' 58"E)
Note: the NHM and MetBase coordinates are 2.8 km apart

Statistics:
     This is 1 of 41908 approved meteorites from Antarctica (plus 3802 unapproved names)
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