Meteoritical Bulletin: Entry for Lewis Cliff 97216

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Lewis Cliff 97216

Basic information

Name: Lewis Cliff 97216
This is an OFFICIAL meteorite name.
Abbreviation: LEW 97216
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 23 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	L3.7
Antarctic Meteorite Newsletter:	AMN 23(2)	(2000)	L3
Meteoritical Bulletin:	MB 85	(2001)	L3.7
MetBase:	v. 7.1	(2006)	L3.7
Recommended:			L3.7 [explanation]

This is 1 of 51 approved meteorites classified as L3.7. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Field number: 9224

Writeup

Writeup from AMN 23(2):

Sample No.:	LEW 97216
Location:	Lewis Cliff
Dimensions (cm):	4.7x2.5x1.0
Weight (g):	22.995
Meteorite Type:	L3 Chondrite (estimated 3.7)

Macroscopic Description: Cecilia Satterwhite
The exterior of this meteorite has black fusion crust over 75% of its surface with oxidation haloes visible. The interior is dark gray to black with oxidation scattered and metal present.

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. Shock effects, including some flattening of chondrules, are evident. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is weathered. Silicates are unequilibrated; olivines range from Fa_9-26, with most grains Fa_24-26, and pyroxenes from Fs_3-4. The meteorite is an L3 chondrite (estimated subtype 3.7).

Data from:
  MB85
  Table A1
  Line 128:

Origin or pseudonym:	South Walcott Icefield
Mass (g):	23
Class:	L3.7
Weathering grade:	B/C
Fayalite (mol%):	9-26
Ferrosilite (mol%):	3-4

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)

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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' 34"S, 161° 46' 1"E)

Note: the NHM and MetBase coordinates are 5 km apart
Note: the NHM and recommended coordinates are 17.6 km apart
Note: the MetBase and recommended coordinates are 18 km apart

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

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Revision
history:

This lists important revisions made to data for this record.

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