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Lewis Cliff 85353
Basic information Name: Lewis Cliff 85353
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 85353
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 24.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(1)  (1987)  Eucrite
AMN 17(1)  (1994)  Eucrite-unbr
Meteoritical Bulletin:  MB 76  (1994)  Eucrite-unbr
NHM Catalogue:  5th Edition  (2000)  Eucrite-unbr
MetBase:  v. 7.1  (2006)  Eucrite
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 92 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Field number: 3188
Writeuphelp
Writeup from AMN 10(1):

Sample No.: LEW85353

Location: Lewis Cliff

Weight (g): 24.5

Field No.: 3188

Dimensions (cm): 4x2x2

Meteorite Type: Eucrite

 

Macroscopic Description: René Martinez

This pebble retains most of its thin fusion crust. Weathering of the stone has removed some fusion crust and left a pitted surface. The interior is light gray and has a basaltic texture.

 

Thin Section (,3) Description: Brian Mason

The section shows a fine-grained aggregate (grains 0.1-0.4 mm) of pale brown pyroxene and colorless plagioclase, with a few opaque grains. Minor weathering is indicated by brown limonitic staining around opaque grains. Plagioclase is fairly uniform in composition, mean Anal. Pyroxene is largely hypersthene of mean composition Wo2Fs60, together with some augite, Wo48Fs22; the augite shows exsolution lamellae of hypersthene. The meteorite is an unbrecciated eucrite.

Data from:
  MB76
  Table 2
  Line 2926:
Origin or pseudonym:Upper Ice Tongue
Mass (g):24.5
Class:Eu "ub"
Weathering grade:B
Ferrosilite (mol%):22-62
Comments:NTL=0.5±0.2
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 10(1) (1987), 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' 26"S, 161° 22' 31"E)
Note: the NHM and MetBase coordinates are 3.4 km apart

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