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Lewis Cliff 88005
Basic information Name: Lewis Cliff 88005
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88005
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 254 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 12(3)  (1989)  Eucrite
AMN 17(1)  (1994)  Eucrite-pmict
Meteoritical Bulletin:  MB 76  (1994)  Eucrite-pmict
NHM Catalogue:  5th Edition  (2000)  Eucrite-pmict
MetBase:  v. 7.1  (2006)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 339 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Field number: 6200
Writeuphelp
Writeup from AMN 12(3):

Sample No.: LEW88005

Location: Lewis Cliff

Dimensions (cm): 7x6x4

Field Number: 6200

Weight (g): 253.9

Meteorite Type: Monomict Eucrite

 

Macroscopic Description: Roberta Score

Ten percent of the original fusion crust remains on LEW88005. Many large semi-rounded clasts, as large as 2 x 2 cm, are present. These clasts include mono- and poly-mineralic clasts, aphantic clasts and eucritic type clasts. Several areas are stained with oxidation. In hand specimen, LEW88005 closely resembles LEW85300, LEW85302 and LEW85303.

 

Thin Section (,11) Description: Brian Mason

The section shows a microbreccia of polycrystalline clasts in a fine-grained matrix of comminuted pyroxene and plagioclase. The clasts range up to 5 mm across, and are fine- to coarse-grained aggregates of pyroxene and plagioclase. Microprobe analyses show pyroxene compositions ranging fairly continuously from Wo1Fs59 to Wo42Fs25, with a limited range in En content (En31-43). Plagioclase compositions are in the range An88-93, with a mean of An92, Accessory grains of a silica polymorph, probably tridymite, were analysed. The meteorite is a monomict eucrite.

Data from:
  MB76
  Table 2
  Line 3862:
Origin or pseudonym:Lower Ice Tongue
Mass (g):253.9
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):25-59
Comments:NTL=23±2; 85300 pairing group
Catalogs:
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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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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 14' 58"S, 161° 23' 16"E)
Note: the NHM and MetBase coordinates are 5.1 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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