Meteoritical Bulletin: Entry for Lewis Cliff 88280

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Lewis Cliff 88280

Basic information

Name: Lewis Cliff 88280
This is an OFFICIAL meteorite name.
Abbreviation: LEW 88280
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 6 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 13(3)	(1990)	Achondrite-unique
	AMN 14(2)	(1991)	Lodranite
Meteoritical Bulletin:	MB 76	(1994)	Lodranite
NHM Catalogue:	5th Edition	(2000)	Lodranite
MetBase:	v. 7.1	(2006)	Lodranite
Recommended:			Lodranite [explanation]

This is 1 of 91 approved meteorites classified as Lodranite. [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites

Comments:

Field number: 6086

Writeup

help

Writeup from AMN 13(3):

Sample No. LEW88280

Location: Lewis Cliff

Dimensions (cm): 1.5 x 1.5 x 1.1

Field Number: 6086

Weight (g): 6.0

Meteorite Type: Achondrite (Unique)

Macroscopic Description: Cecilia Satterwhite

This achondrite's interior is entirely composed of coarse-grained crystalline material. The minerals easily disaggregated while working with the meteorite, making mineral separation a breeze! A small amount of metal was noted. Oxidation is present throughout the sample.

Thin Section (,3) Description: Brian Mason

The section shows an equigranular aggregate of anhedral to subhedral olivine and pyroxene grains, 0.6-1.2 mm across, with about 20% of intergranular nickel-iron and a little troilite. The meteorite is unweathered Microprobe analyses show olivine and pyroxene of uniform composition: olivine, Fa13; pyroxene, Wo3Fs12. The meteorite is tentatively classified as a unique achondrite. Mineral compositions are similar to those in the Acapulco-like meteorites, but the, texture is much coarser. It also resembles some inclusions from iron meteorites.

Data from:
  MB76
  Table 2
  Line 4134:

Origin or pseudonym:	Upper Ice Tongue
Mass (g):	6
Class:	Lod
Weathering grade:	B
Fayalite (mol%):	13
Ferrosilite (mol%):	12

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 13(3) (1990), 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° 16' 57"S, 161° 21' 32"E)

Note: the NHM and MetBase coordinates are 3.1 km apart

Statistics:
This is 1 of 44048 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

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