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Larkman Nunatak 04318
Basic information Name: Larkman Nunatak 04318
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 04318
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 53.3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 28(2)  (2005)  CK4
Meteoritical Bulletin:  MB 91  (2007)  CK4
Recommended:  CK4    [explanation]

This is 1 of 105 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 1 Sep 2005
Writeuphelp
Writeup from AMN 28(2):
Sample No.: LAR 04317; LAR 04318
Location: Larkman Nunatak
Field No.: 15551; 15495
Dimensions (cm):   2.0x2.0x1.0
4.5x2.5x3.0
Weight (g): 10.360; 53.304
Meteorite Type: CK4 Chondrite
    
LAR 04317 and LAR 04318 LAR 04317 and LAR 04318 LAR 04318
   

Macroscopic Description: Kathleen McBride
~90% of the exterior surface is covered with thick brown/black fusion crust with polygonal fractures. The interiors are composed of gray matrix with large chondrules and are very hard.

Thin Section (,3 ,4) Description: Tim McCoy
These meteorites are so similar that a single description suffices. The sections consist of large (up to 2 mm) chondrules and isolated mineral grains in a matrix of finer-grained silicates, sulfides and very abundant magnetite. Olivine is Fa29-32 and calcic pyroxene is Fs10Wo45. The meteorites are CK4 chondrites.


LAR 04317 - Cross-Polarized Light LAR 04317 - Reflected Light LAR 04317 - Cross-Polarized Light LAR 04317 - Reflected Light
LAR 04317
Cross-Polarized Light
LAR 04317
Reflected Light
LAR 04317
Cross-Polarized Light
LAR 04317
Reflected Light
Data from:
  MB91
  Table 4
  Line 695:
Mass (g):53.3
Class:CK4
Weathering grade:A/B
Fayalite (mol%):29-30
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 28(2) (2005), JSC, Houston
Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
unknown         
Geography:

Antarctica
Coordinates:Unknown.

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

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