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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:help 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 572 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Field number: 4404
Writeuphelp
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:
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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 40753 approved meteorites from Antarctica (plus 4494 unapproved names)
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