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Lewis Cliff 88758
Basic information Name: Lewis Cliff 88758
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88758
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(1)  (1992)  LL3
Meteoritical Bulletin:  MB 76  (1994)  LL3.4
NHM Catalogue:  5th Edition  (2000)  LL3.4
MetBase:  v. 7.1  (2006)  LL3
Recommended:  LL3.4    [explanation]

This is 1 of 24 approved meteorites classified as LL3.4.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5620
Writeuphelp
Writeup from AMN 15(1):

Sample No.: LEW88758

Location: Lewis Cliff

Field Number: 5620

Dimensions (cm): 2.1 x 1.5 x 0.9

Weight (g): 5.0

Meteorite Type: LL3 chondrite

 

Macroscopic Description: Robbie Marlow

Shiny, dark brown fusion crust covers nearly half the exterior of this extremely weathered meteorite. The interior consists of dark brown matrix with some orangish colored inclusions/chondrules.

 

Thin Section (,2) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 1.7 mm across, in a fine-grained dark matrix which contains trace amounts of nickel-iron and troilite. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa2-32, mean Fa16 (CV FeO is 57); pyroxene, Fs2-27. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron LL group, hence the meteorite is classified as an LL3 chondrite (estimated LL 3.4).

 

Data from:
  MB76
  Table 2
  Line 4598:
Origin or pseudonym:Lower Ice Tongue
Mass (g):5
Class:LL3.4
Weathering grade:C
Fayalite (mol%):2-32
Ferrosilite (mol%):2-27
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(1) (1992), 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° 13' 53"S, 161° 27' 53"E)
Note: the NHM and MetBase coordinates are 7.2 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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