header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 7 Nov 2019
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:
Limit to approved meteorite names
Search text:  
Lewis Cliff 87223
Basic information Name: Lewis Cliff 87223
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87223
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 110.3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 12(1)  (1989)  E3
AMN 17(1)  (1994)  E3-an
Meteoritical Bulletin:  MB 76  (1994)  E3-an
NHM Catalogue:  5th Edition  (2000)  E3-an
MetBase:  v. 7.1  (2006)  E3-an
Recommended:  E3-an    [explanation]

This is 1 of 6 approved meteorites classified as E3-an.   [show all]
Search for other: Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Comments: Field number: 4708
Writeuphelp
Writeup from AMN 12(1):

Sample No.: LEW87223

Location: Lewis Cliff

Weight(g): 110.3

Field No.: 4708

Dimensions (cm): 7x4x2

Meteorite Type: E3 Chondrite

 

Macroscopic Description: Carol Schwarz

This specimen is so heavily weathered and fractured it fell apart during sampling. It is uniformly weathered to dark reddish-brown.

 

Thin Section (,2) Description: Brian Mason

The section shows a closely-packed aggregate of chondrules, up to 1.5 mm across, together with abundant metal grains and a little sulfide. Weathering is extensive, with brown limonitic staining throughout the section. The chondrules consist almost entirely of polysynthetically twinned clino-enstatite; a few rounded grains of olivine were noted. Most of the pyroxene is close to MgSiO3 in composition, but a few more Fe-rich grains were analysed; one olivine grain has a composition Fa4. The metal has a variable Si content, up to 0.6%. The meteorite is tentatively classified as an E3 chondrite.

Data from:
  MB76
  Table 2
  Line 3790:
Origin or pseudonym:South Lewis Cliff
Mass (g):110.3
Class:E3 an
Weathering grade:C
Fayalite (mol%):4
Ferrosilite (mol%):0-12
Comments:87057 pairing group
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 12(1) (1989), 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° 22' 13"S, 161° 19' 5"E)
Note: the NHM and MetBase coordinates are 10.1 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page