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Lewis Cliff 87271
Basic information Name: Lewis Cliff 87271
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87271
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 11(2)  (1988)  C2
Meteoritical Bulletin:  MB 76  (1994)  C2
NHM Catalogue:  5th Edition  (2000)  C2
MetBase:  v. 7.1  (2006)  CM2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM2
Recommended:  CM2    [explanation]

This is 1 of 540 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Field number: 4750
Writeuphelp
Writeup from AMN 11(2):

Sample No.: LEW87271

Location: Lewis Cliff

Weight (g): 0.9

Field No.: 4750

Dimensions (cm): 1.8 x 0.6 x 1

Meteorite Type: C2 Chondrite

 

Macroscopic Description: Carol Schwarz

This small smooth fragment is covered with black fractured fusion crust except for one weathered surface devoid of fusion crust. The interior is black to brownish in color with small <1 mm inclusions. Salt deposits are abundant next to the fusion crust.

 

Thin Section (,2) Description: Brian Mason

The section shows sparse chondrules, up to 0.6 mm across, and small mineral grains in a dark brown to black matrix. Microprobe analyses show most olivine near Mg2SiO4 in composition, but ranging up to Fa24 (mean composition is Fa4); a little pyroxene, near MgSiO3, is present. The meteorite is a C2 chondrite, but does not appear to belong to the LEW87001 group.

Data from:
  MB76
  Table 2
  Line 3835:
Origin or pseudonym:South Lewis Cliff
Mass (g):0.9
Class:C2
Weathering grade:B
Fayalite (mol%):0-24
Ferrosilite (mol%):0-5
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° 20' 31"S, 161° 14' 43"E)
Note: the NHM and MetBase coordinates are 6.8 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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