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Lewis Cliff 85332
Basic information Name: Lewis Cliff 85332
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 85332
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 113.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(1)  (1987)  CO3
AMN 15(2)  (1992)  C-ung
AMN 17(1)  (1994)  C3-ung
Meteoritical Bulletin:  MB 76  (1994)  C3-ung
NHM Catalogue:  5th Edition  (2000)  C3-ung
MetBase:  v. 7.1  (2006)  C3-ung
Recommended:  C3-ung    [explanation]

This is 1 of 17 approved meteorites classified as C3-ung.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), and Ungrouped chondrites
Comments: Field number: 2456
Writeuphelp
Writeup from AMN 10(1):

Sample No.: LEW85332

Location: Lewis Cliff

Weight (g): 113.7

Field No.: 2425

Dimensions (cm): 5.5x4x3.5

Meteorite Type: C3O Chondrite

 

Macroscopic Description: René Martinez

Dark fusion crust covers all but one exterior surface. Fine-grained dark gray matrix with a few <1 mm-sized light color inclusions make up the interior of this carbonaceous chondrite.

 

Thin Section (,4) Description: Brian Mason

The section shows an aggregate of small chondrules (up to 1.2 mm across, but most are less than 0.5 mm), chondrule fragments, and irregular granular masses set in a translucent yellow-brown matrix. Chondrules are mainly granular or porphyritic olivine. Minor amounts of nickel-iron and sulfide are present, as small grains scattered through the matrix, sometimes concentrated around chondrule rims. Olivine shows a wide composition range, Fa1-20, mean Fa9; pyroxene is less abundant, and has composition range Fs1-16. The meteorite is classified as a C3 chondrite of the Ornans subtype.

Data from:
  MB76
  Table 2
  Line 2905:
Origin or pseudonym:Upper Ice Tongue
Mass (g):113.7
Class:C3 ung
Weathering grade:B/C
Fayalite (mol%):1-20
Ferrosilite (mol%):1-16
Comments:NTL=55±28
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° 17' 24"S, 161° 20' 11"E)
Note: the NHM and MetBase coordinates are 2.9 km apart

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