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Lewis Cliff 86526
Basic information Name: Lewis Cliff 86526
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 86526
Observed fall: No
Year found: 1986
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 14.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(1)  (1991)  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: 4959
Writeuphelp
Writeup from AMN 14(1):

Sample No: LEW86526

Location: Lewis Cliff

Field Number: 4959

Dimensions (cm): 2.5 x 2 x 1

Weight (g): 21.8

Meteorite Type: H3 Chondrite

 

Macroscopic Description: Cecilia Satterwhite

Weathered fusion crust covers the entire meteorite. The interior is weathered but white and orange inclusions, 2-3 mm in size, are still visible.

 

Thin Section (,1) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.2 mm across, in a granular matrix of olivine and pyroxene with minor amounts of nickel-iron and troilite. The meteorite is somewhat weathered, with brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa13-22, mean Fa17 (CV FeO is 14); pyroxene, Fs9-14. The amount, of nickel-iron suggests H group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an H3 chondrite (estimated H3.8).

 

Data from:
  MB76
  Table 2
  Line 3557:
Origin or pseudonym:Lower Ice Tongue
Mass (g):14.1
Class:H3.8
Weathering grade:B/C
Fayalite (mol%):13-22
Ferrosilite (mol%):8-14
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 14(1) (1991), 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' 21"S, 161° 26' 40"E)
Note: the NHM and MetBase coordinates are 6.4 km apart

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