Meteoritical Bulletin: Entry for Lewis Cliff 97225

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Lewis Cliff 97225

Basic information

Name: Lewis Cliff 97225
This is an OFFICIAL meteorite name.
Abbreviation: LEW 97225
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 2.1 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	Ureilite
Antarctic Meteorite Newsletter:	AMN 23(2)	(2000)	Ureilite
Meteoritical Bulletin:	MB 85	(2001)	Ureilite
MetBase:	v. 7.1	(2006)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 542 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Field number: 11054

Writeup

Writeup from AMN 23(2):

Sample No.:	LEW 97225
Location:	Lewis Cliff
Dimensions (cm):	1.0x0.75x1.25
Weight (g):	2.106
Meteorite Type:	Ureilite

Macroscopic Description: Kathleen McBride
Smooth brown/black fusion crust completely covers the exterior surface. The interior has a yellowish matrix with heavy oxidation and rust areas.

Thin Section (, 2) Description: Tim McCoy
The section consists of an aggregate of large olivine and pyroxene grains up to 2 mm across. Individual olivine grains are rimmed by carbon-rich material containing traces of metal. Modest shock effects (e.g., planar fractures) are present. Olivine has cores of Fa₂₁, with rims reduced to Fa₁₁. Most pigeonite is Fs₁₈Wo₉ with a single rim value of Fs₈Wo₉. The meteorite is a ureilite.

Data from:
  MB85
  Table A1
  Line 137:

Origin or pseudonym:	Meteorite Moraine
Mass (g):	2.1
Class:	Ur
Weathering grade:	C
Fayalite (mol%):	11-21
Ferrosilite (mol%):	8-18

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 23(2) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(84° 17'S, 161° 5'E)
Recommended::	(84° 16' 25"S, 161° 41' 2"E)

Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 6.8 km apart
Note: the MetBase and recommended coordinates are 2.2 km apart

Statistics:
This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)

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