header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Oct 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Lewis Cliff 88634
Basic information Name: Lewis Cliff 88634
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88634
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 16(2)  (1993)  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: 6160
Writeuphelp
Writeup from AMN 16(2):

Sample No.: LEW88634

Location: Lewis Cliff

Dimensions (cm): 2.5 x 1.9 x 1.0

Weight (g): 7.7

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Fifty percent of this meteorite is covered with fusion crust and oxidation haloes are present. The dark-brown interior consists of abundant gray inclusions that range in size from 1 to 3 mm.

 

Thin Section (.5) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 3.6 mm across, in a black matrix containing small amounts of nickel-iron and troilite. The chondrules are mainly granular and porphyritic olivine and olivine-pyroxene, with a few cryptocrystalline pyroxene. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-33, mean Fa16 (CV FeO is 50); pyroxene, Fs6-18. The variability of olivine and pyroxene compositions indicate type 3, and the amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.4).

 

Data from:
  MB76
  Table 2
  Line 4474:
Origin or pseudonym:Upper Ice Tongue
Mass (g):7.7
Class:L3.4
Weathering grade:B/C
Fayalite (mol%):1-33
Ferrosilite (mol%):6-18
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
    Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 16(2) (1993), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 16' 2"S, 161° 26' 53"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)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page