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Larkman Nunatak 06621
Basic information Name: Larkman Nunatak 06621
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 06621
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 30(2)  (2007)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 383 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 31 Aug 2007
Writeuphelp
Writeup from AMN 30(2):
Sample No.: LAR 06621
Location: Larkman Nunatak
Field No.: 19339
Dimensions (cm):   3.5 x 3.0 x 1.5
Weight (g): 20.235
Meteorite Type:

Howardite



Macroscopic Description: Kathleen McBride
Rough brown/black fusion crust covers 50% of the exterior. The matrix is a tannish gray color with

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with fine- to coarse-grained basaltic clasts ranging up to 3 mm. Impact melt clasts are 1-2 mm and occur in some abundance. Pyroxene varies widely in composition with iron-rich pyroxenes ranging between Fs60Wo3 and Fs27Wo43. Iron-poor pyroxenes are Fs19Wo1. Pyroxene has an Fe/Mn ratio of ~30. Plagioclase is An84-93Or0.3. The meteorite is a howardite.



Thin Section Images

Plane-Polarized
Light LAR 06621
Cross Polarized Light
LAR 06621
LAR06621 - Plane-Polarized Light LAR06621 - Cross Polarized Light



Lab Images

LAR 06621

Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 30(2) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)

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