Meteoritical Bulletin: Entry for Lewis Cliff 87214

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Lewis Cliff 87214

Basic information

Name: Lewis Cliff 87214
This is an OFFICIAL meteorite name.
Abbreviation: LEW 87214
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 0.4 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 12(1)	(1989)	C4
	AMN 17(1)	(1994)	CK4
Meteoritical Bulletin:	MB 76	(1994)	CK4
NHM Catalogue:	5th Edition	(2000)	CK4
MetBase:	v. 7.1	(2006)	CK4
Recommended:			CK4 [explanation]

This is 1 of 128 approved meteorites classified as CK4. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Field number: 4734

Writeup

Writeup from AMN 12(1):

Sample No.: LEW 87214

Location: Lewis Cliff

Weight(g): 0.4

Field No.: 4734

Dimensions (cm): 1x0.6x0.3

Meteorite Type: C4 Chondrite

Macroscopic Description: Carol Schwarz

Black fusion crust covers about 40% of this tiny specimen. The interior is gray and very fine-grained.

Thin Section (,3) Description: Brian Mason

The section shows an aggregate of small (0.01-0.02 mm) olivine grains and a little opaque material, with sparse chondrules up to 0.6 mm across. Olivine composition is essentially uniform, Fa29; no orthopyroxene was found but one grain of diopside, Wo45Fs10, was analysed. Two grains of plagioclase, An31 and An67, were analysed. The meteorite is a C4 chondrite.

Data from:
  MB76
  Table 2
  Line 3781:

Origin or pseudonym:	South Lewis Cliff
Mass (g):	0.4
Class:	CK4
Weathering grade:	A/B
Fayalite (mol%):	29
Comments:	87214 pairing group

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
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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' 33"S, 161° 15' 9"E)

Note: the NHM and MetBase coordinates are 6.9 km apart

Statistics:
This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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history:

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