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Lewis Cliff 88500
Basic information Name: Lewis Cliff 88500
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88500
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 16 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(1)  (1992)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.7
NHM Catalogue:  5th Edition  (2000)  H3.7
MetBase:  v. 7.1  (2006)  H3
Recommended:  H3.7    [explanation]

This is 1 of 75 approved meteorites classified as H3.7.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 5224
Writeuphelp
Writeup from AMN 15(1):

Sample No.: LEW88500

Location: Lewis Cliff

Field Number: 5224

Dimensions (cm): 4.1 x 1.4 x 1.6

Weight (g): 16.0

Meteorite Type: H3 chondrite

 

Macroscopic Description: Robbie Marlow LEW88500 is mostly covered with shiny brown fusion crust. The Interior is severely weathered masking any features that may be present.

 

Thin Section (,2) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 1.9 mm across, in a finely granular matrix of olivine and pyroxene with a moderate amount of nickel-iron and a little troilite. Weathering is extensive, with limonitic staining and areas of brown limonite throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-20, mean Fa16 (CV FeO is 29); pyroxene, Fs7-18. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron H group, hence the meteorite is classified as an H3 chondrite (estimated H3.7).

 

Data from:
  MB76
  Table 2
  Line 4347:
Origin or pseudonym:Lower Ice Tongue
Mass (g):16
Class:H3.7
Weathering grade:C
Fayalite (mol%):1-20
Ferrosilite (mol%):7-18
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° 14' 53"S, 161° 23' 34"E)
Note: the NHM and MetBase coordinates are 5.2 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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