Meteoritical Bulletin: Entry for Lewis Cliff 97202

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Lewis Cliff 97202

Basic information

Name: Lewis Cliff 97202
This is an OFFICIAL meteorite name.
Abbreviation: LEW 97202
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 117.6 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	L3.4
Antarctic Meteorite Newsletter:	AMN 23(2)	(2000)	L3
Meteoritical Bulletin:	MB 85	(2001)	L3.4
MetBase:	v. 7.1	(2006)	L3.4
Recommended:			L3.4 [explanation]

This is 1 of 51 approved meteorites classified as L3.4. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Field number: 9202

Writeup

Writeup from AMN 23(2):

Sample No.:	LEW 97202
Location:	Lewis Cliff
Dimensions (cm):	7.0x3.0x2.5
Weight (g):	117.596
Meteorite Type:	L3 Chondrite (estimated 3.4)

Macroscopic Description: Kathleen McBride
75% of the exterior of this meteorite has brown/black fusion crust with polygonal fractures and oxidation. The interior is rusty with a few light colored, mm sized chondrules. The meteorite is hard and contains numerous metal grains.

Thin Section (, 2) Description: Tim McCoy
The section exhibits numerous well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite. Polysynthetically twinned pyroxene is extremely abundant. Silicates are unequilibrated; olivines range from Fa_1-33 and pyroxenes from Fs_3-10. The meteorite is an L3 chondrite (estimated subtype 3.4).

Data from:
  MB85
  Table A1
  Line 114:

Origin or pseudonym:	South Walcott Icefield
Mass (g):	117.6
Class:	L3.4
Weathering grade:	C
Fayalite (mol%):	1-33
Ferrosilite (mol%):	3-10

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° 25' 48"S, 161° 44' 6"E)

Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 17.9 km apart
Note: the MetBase and recommended coordinates are 18.4 km apart

Statistics:
This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

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