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Lewis Cliff 88503
Basic information Name: Lewis Cliff 88503
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88503
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.8
NHM Catalogue:  5th Edition  (2000)  H3.8
MetBase:  v. 7.1  (2006)  H3.8
Recommended:  H3.8    [explanation]

This is 1 of 78 approved meteorites classified as H3.8.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5232
Writeuphelp
Writeup from AMN 15(2):

Sample No.: LEW88503

Location: Lewis Cliff

Field Number: 5232

Dimensions (cm): 2.4 x 1.8 x 1.1

Weight (g): 7.4

Meteorite Type: H3 chondrite

 

Macroscopic Description: Robbie Marlow

Shiny brown fusion crust covers approximately 80% of the exterior of this specimen. Numerous orange millimeter-sized chondrules/inclusions were noted in the weathered matrix. Evaporate deposit is also present.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.8 mm across, in a granular matrix of olivine and pyroxene with some nickel-iron and a little troilite. Weathering is extensive, with limonitic staining and patches of brown limonite throughout the section. Microprobe analyses show olivine and pyroxene of variable

composition: olivine, Fa12-24, mean Fa19 (CV FeO is 12); pyroxene, Fs6-16. The meteorite is classified as an H3 chondrite (estimated H3.8).

 

Data from:
  MB76
  Table 2
  Line 4350:
Origin or pseudonym:Lower Ice Tongue
Mass (g):7.4
Class:H3.8
Weathering grade:Ce
Fayalite (mol%):12-24
Ferrosilite (mol%):6-16
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(2) (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° 15' 3"S, 161° 23' 18"E)
Note: the NHM and MetBase coordinates are 5 km apart

Statistics:
     This is 1 of 38940 approved meteorites from Antarctica (plus 5051 unapproved names)
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