Meteoritical Bulletin: Entry for Larkman Nunatak 06621

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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: 20.2 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 30(2)	(2007)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 31 Aug 2007

Writeup

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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 An_84-93Or_0.3. The meteorite is a howardite.

Thin Section Images

Plane-Polarized Light LAR 06621	Cross Polarized Light LAR 06621

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)

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Photos:

Credit	Photos
Photographs from AMN:
JSC	A photo is in the write-up above

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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