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Lewis Cliff 86213
Basic information Name: Lewis Cliff 86213
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 86213
Observed fall: No
Year found: 1986
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 27.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(1)  (1991)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 2307
Writeuphelp
Writeup from AMN 14(1):

Sample No: LEW86213

Location: Lewis Cliff

Field Number: 2307

Dimensions (cm): 3 x 2.5 x 1.5

Weight (g): 27.9

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Evaporite deposit is present on the thin weathered fusion crust of this meteorite. The interior is dark brown to black and contains numerous small, orangish colored inclusions.

 

Thin Section (,4) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.2 mm across, in a granular matrix consisting largely of olivine and pyroxene with small amounts of nickel-iron and troilite. Most of the chondrules consist of granular or porphyritic olivine and olivine-pyroxene, but a few radiating pyroxene chondrules were noted. The meteorite is considerably weathered, with brown limonite pervading the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fat-20, mean Fa11 (CV FeO is 54); pyroxene, Fs1-16. The small amount of nickel- iron suggests L group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an L3 chondrite (estimated L3.4).

 

Data from:
  MB76
  Table 2
  Line 3254:
Origin or pseudonym:Lower Ice Tongue
Mass (g):27.9
Class:L3.4
Weathering grade:Ce
Fayalite (mol%):2-20
Ferrosilite (mol%):1-16
Comments:NTL=13±2
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° 15' 17"S, 161° 21' 6"E)
Note: the NHM and MetBase coordinates are 4.4 km apart

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