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Lewis Cliff 86127
Basic information Name: Lewis Cliff 86127
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 86127
Observed fall: No
Year found: 1986
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 11.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 11(1)  (1988)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.3
NHM Catalogue:  5th Edition  (2000)  L3.3
MetBase:  v. 7.1  (2006)  L3.3
Recommended:  L3.3    [explanation]

This is 1 of 18 approved meteorites classified as L3.3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 3235
Writeuphelp
Writeup from AMN 11(1):

Sample No.: LEW86127; 86134; 86144; 86158; 86207; 86246

Location: Lewis Cliff

Field No.: 3235;3272;3291; 3248;2341;2355

Weight (g): 11.9; 28.9; 11.1; 8.6; 17.7; 2.3

Dimensions (cm): 2.5x2x1; 3.5x3x1.5; 2.5x2x1.5; 2x1x1.5; 2x2x1.5; 1x1xl1

Meteorite Type: L3 Chondrite

 

Macroscopic Description: René Martinez and Cecilia Satterwhite

All of these hand-specimens show light and dark chondrules and angular fragments in contrast with a darker, very coherent matrix. Some of the chondrules are rimmed and range from <1 mm to ~4 mm diameter.

 

Thin Section (LEW86127,2; 86134,3; 86144,2; 86158,2; 86207,3; 86246,2) Description: Brian Mason

These meteorites are very similar in all respects and are possibly paired. The sections show a close-packed aggregate of chondrules and chondrule fragments, up to 3 mm across, in a minimum amount of fine-grained dark matrix which contains a little nickel-iron and troilite. Chondrule types include granular and porphyritic olivine and olivine-pyroxene, barred olivine, and radiating and cryptocrystalline pyroxene. Weathering is extensive, with brown limonitic staining throughout. Microprobe analyses show olivine and

pyroxene with a wide range of composition: olivine, Fa1-29; pyroxene, Fs1-21. The low content of nickel-iron suggests L group, and the wide range of olivine and pyroxene compositions type 3; thus these meteorites are tentatively classified as L3 chondrites (estimated L3.5).

Data from:
  MB76
  Table 2
  Line 3169:
Origin or pseudonym:Lower Ice Tongue
Mass (g):11.9
Class:L3.3
Weathering grade:B
Fayalite (mol%):2-26
Ferrosilite (mol%):2-17
Comments:86127 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 11(1) (1988), 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' 31"S, 161° 24' 58"E)
Note: the NHM and MetBase coordinates are 4.6 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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