Meteoritical Bulletin: Entry for Lewis Cliff 85332

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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: 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 30 approved meteorites classified as C3-ung. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), and Ungrouped chondrites

Comments:

Field number: 2456

Writeup

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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:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):

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

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 44248 approved meteorites from Antarctica (plus 3802 unapproved names)

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