Meteoritical Bulletin: Entry for Lewis Cliff 87165

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Lewis Cliff 87165

Basic information

Name: Lewis Cliff 87165
This is an OFFICIAL meteorite name.
Abbreviation: LEW 87165
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 5 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 12(1)	(1989)	Ureilite
Meteoritical Bulletin:	MB 76	(1994)	Ureilite
NHM Catalogue:	5th Edition	(2000)	Ureilite
MetBase:	v. 7.1	(2006)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Field number: 4404

Writeup

Writeup from AMN 12(1):

Sample No.: LEW 87165

Location: Lewis Cliff

Weight(g): 5.0

Field No.: 4404

Dimensions (cm): 2x1.5x0.8

Meteorite Type: Ureilite

Macroscopic Description: Carol Schwarz.

Black fusion crust covers about 80% of this ureilite. The interior is black and fine-grained.

Thin Section . (,3).. Description: Brian Mason

The section shows an aggregate of anhedral grains of olivine and pyroxene, 0.6-2.5 mm across, the grains rimmed by black carbonaceous material. The pyroxene shows well-developed polysynthetic twinning. Microprobe analyses show olivine and pyroxene of uniform composition: olivine, Fa15; pyroxene, Wo7Fs13. The meteorite is a ureilite.

Data from:
  MB76
  Table 2
  Line 3735:

Origin or pseudonym:	South Lewis Cliff
Mass (g):	5
Class:	Ur
Weathering grade:	B
Fayalite (mol%):	15
Ferrosilite (mol%):	13

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 12(1) (1989), 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' 34"S, 161° 23' 56"E)

Note: the NHM and MetBase coordinates are 7.5 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

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