MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 29 May 2023
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Lewis Cliff 87009
Basic information Name: Lewis Cliff 87009
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 87009
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 50.5 g
Antarctic Meteorite Newsletter:  AMN 11(2)  (1988)  C6
AMN 17(1)  (1994)  CK6
Meteoritical Bulletin:  MB 76  (1994)  CK6
NHM Catalogue:  5th Edition  (2000)  CK6
MetBase:  v. 7.1  (2006)  CK6
Recommended:  CK6    [explanation]

This is 1 of 80 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Field number: 4413
Writeup from AMN 11(2):

Sample No.: LEW87009

Location: Lewis Cliff

Weight (g): 50.5

Field No.: 4413

Dimensions (cm): 5 x 3 x 2

Meteorite Type: C6 Chondrite


Macroscopic Description: Carol Schwarz

About 85% of the exterior of this specimen is covered with fusion crust. Salt deposit has formed in some areas. Areas devoid of fusion crust are greenish and weathered. The interior is greenish-gray with no clasts evident. There is a dark weathering rind along one edge.


Thin Section (,2) Description: Brian Mason

The section shows an aggregate of anhedral grains (0.05-0.3 mm) of olivine with minor plagioclase; blebs of magnetite (0.01-0.03 mm, sometimes aggregated into larger masses) are scattered throughout. Traces of sulfide are present. A black glassy veinlet, 0.08 mm wide, crosses the section. Some of the silicate aggregates have a vaguely chondritic form. Microprobe analyses give the following compositions: olivine, Fa31; plagioclase, An44-48; orthopyroxene was not found, but one grain of augite, Wo44Fs12, was analyzed. Mineral compositions resemble those in C4 chondrites, but the relatively coarse grain size and the practical absence of chondritic structure indicates a higher type, hence the meteorite is tentatively classified as a C6 chondrite.

Data from:
  Table 2
  Line 3587:
Origin or pseudonym:South Lewis Cliff
Mass (g):50.5
Weathering grade:Ae
Fayalite (mol%):31
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 11(2) (1988), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:

     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 21' 25"S, 161° 17' 29"E)
Note: the NHM and MetBase coordinates are 8.5 km apart

     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page