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Lewis Cliff 86102
Basic information Name: Lewis Cliff 86102
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 86102
Observed fall: No
Year found: 1986
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 21.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 13(3)  (1990)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.3
Antarctic Meteorite Newsletter:  AMN 19(1)  (1996)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  H3.3
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: 3004
Revised 17 Nov 2007: Reclassified by Krot 1997, GCA 61, 219
Writeuphelp
Writeup from AMN 13(3):

Sample No. LEW86102; 86105

Location: Lewis Cliff

Dimensions (cm): 3.5 x 1.5 x 1.5; 1.5 x 1 x 1

Field Number: 3004; 3016

Weight (g): 21.8; 6.4

Meteorite Type: H3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Shiny smooth brown/black fusion crust completely covers both of these specimens. The interior consists of black matrix with abundant small weathered chondrules. Oxidation is scattered throughout the interior with LEW86105 being more weathered.

 

Thin Section (LEW86102,3; 86105,2) Description: Brian Mason

These sections are so similar that a single description will suffice; the meteorites are probably paired. Chondrules and chondrule fragments are abundant,, ranging up to 2.1 mm across; most are porphyritic or granular olivine and olivine-pyroxene, but a few radiating or cryptocrystalline pyroxene chondrules were noted. They are surrounded by a dark finely granular groundmass containing some metal and a little sulfide, often as rims to chondrules; the metal is extensively altered to limonite. Microprobe analyses show olivine and pyroxene of highly variable composition; olivine, Fa1-50 (CV FeO is 70); pyroxene, Fs1-41. The meteorites are tentatively classified as H3 chondrites (estimated H3.3).

Data from:
  MB76
  Table 2
  Line 3144:
Origin or pseudonym:Lower Ice Tongue
Mass (g):21.8
Class:H3.3
Weathering grade:C
Fayalite (mol%):1-48
Ferrosilite (mol%):1-41
Comments:86102 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 13(3) (1990), 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' 34"S, 161° 20' 48"E)
Note: the NHM and MetBase coordinates are 4 km apart

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