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Lewis Cliff 87053
Basic information Name: Lewis Cliff 87053
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87053
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.4 g
Antarctic Meteorite Newsletter:  AMN 13(1)  (1990)  Howardite
Meteoritical Bulletin:  MB 76  (1994)  Howardite
NHM Catalogue:  5th Edition  (2000)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 427 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Field number: 4063
Writeup from AMN 12(1):

Sample No.: LEW87053

Location: Lewis Cliff

Weight(g): 0.4

Field No.: 4063

Dimensions (cm): 0.8x0.8x0.4

Meteorite Type: Howardite


Macroscopic Description: René Martinet

This small howardite appears very fresh and 40% of it is covered with black fusion crust. Plagioclase crystals are visible with the unaided eye.


Thin Section (,3) Description: Brian Mason,

The section shows a microbreccia of plagioclase and pyroxene clasts, up to 0.8 mm in greatest dimension, together with a little opaque. Brown limonitic staining pervades the section. Microprobe analyses show the plagioclase variable in composition, An87-92, mean An91. Most of the pyroxene is iron-rich hypersthene, with compositions clustered around Wo2Fs55; a little augite is present, and a minor amount of diogenitic pyroxene, Wo2Fs20. The meteorite is a howardite, possibly paired with LEW87005 and LEW87015.

Data from:
  Table 2
  Line 3630:
Origin or pseudonym:South Lewis Cliff
Mass (g):0.4
Weathering grade:A
Ferrosilite (mol%):20-64
Comments:87005 pairing group
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References: Published in Antarctic Meteorite Newsletter 12(1) (1989), 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° 20' 48"S, 161° 28' 47"E)
Note: the NHM and MetBase coordinates are 8.3 km apart

     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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