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Larkman Nunatak 06868
Basic information Name: Larkman Nunatak 06868
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 06868
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 15.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CK5
Meteoritical Bulletin:  MB 94  (2008)  CK5
Recommended:  CK5    [explanation]

This is 1 of 205 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 17 Feb 2008
Writeuphelp
Writeup from AMN 31(1):
Sample No.: LAR 06868
Location: Larkman Nunatak
Field No.: 19994, 19255, 19454
Dimensions (cm):   3.0 x 2.5 x 1.0; 3.5 x 2.5 x 2.25; 3.5 x 2.5 x 2.5
Weight (g): 15.367; 25.721; 42.215
Meteorite Type:

CK5 Chondrite

Pairing: LAR 06868, LAR 06871, LAR 06874


Macroscopic Description: Kathleen McBride
The fusion crust on the exteriors of these meteorites is brown/black with polygonal fractures. The interiors are gray to black matrix, fine grained with some evaporites. Inclusions/chondrules are light colored.

 

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach and Cari Corrigan
The sections consist of large (up to 2 mm) chondrules in a matrix of finer-grained silicates, sulfides and magnetite. The meteorites are extensively shock blackened. Silicates are homogeneous. Olivine is Fa29-31 and orthopyroxene is Fs25-26 across the pairing group. The meteorites are CK5 chondrites


Thin Section Images

Plane-Polarized
Light LAR 06868		 Cross-Polarized
Light LAR 06868
LAR 06868 - Plane-Polarized
LAR 06868 - Cross-Polarized



Lab Images

North View
LAR 06868
LAR 06868 - North View

Data from:
  MB94
  Table 4
  Line 779:
Mass (g):15.4
Class:CK5
Weathering grade:C
Fayalite (mol%):31
Ferrosilite (mol%):26
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 31(1) (2008), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
Find references in NASA ADS:
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

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