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Lewis Cliff 87026
Basic information Name: Lewis Cliff 87026
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87026
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 22.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 11(2)  (1988)  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 342 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Field number: 4211
Writeuphelp
Writeup from AMN 11(2):

Sample No.: LEW87026

Location: Lewis Cliff

Weight (g): 22.7

Field No.: 4211

Dimensions (cm): 2.5 x 2.7 x 2.3

Meteorite Type: Brecciated Eucrite

 

Macroscopic Description: Carol Schwarz

About 70% of this eucrite is covered with a dull black fusion crust. The interior is light gray and fine-grained with small (<1 mm) gray and white inclusions.

 

Thin Section (,2) Description: Brian Mason

The section shows a microbreccia of pale brown pyroxene and colorless plagioclase grains, up to 1.8 mm across, in a comminuted groundmass of these minerals; a few small lithic clasts are present. Most of the pyroxene is pigeonite averaging Wo7Fs47, but a little augite, Wo36Fs32, is present, and intermediate compositions were measured on some spots. Plagioclase composition is An87-93. The meteorite is a brecciated eucrite, probably monomict.

Data from:
  MB76
  Table 2
  Line 3603:
Origin or pseudonym:Lower Ice Tongue
Mass (g):22.7
Class:Eu "pm"
Weathering grade:A
Ferrosilite (mol%):32-50
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 11(2) (1988), 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° 15' 11"S, 161° 23' 56"E)
Note: the NHM and MetBase coordinates are 4.9 km apart

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