Meteoritical Bulletin: Entry for Meteorite Hills 00427

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Meteorite Hills 00427

Basic information

Name: Meteorite Hills 00427
This is an OFFICIAL meteorite name.
Abbreviation: MET 00427
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 18.6 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	Howardite
Antarctic Meteorite Newsletter:	AMN 24(2)	(2001)	Howardite
Meteoritical Bulletin:	MB 86	(2002)	Howardite
MetBase:	v. 7.1	(2006)	Howardite
Recommended:			Howardite [explanation]

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

Writeup

Writeup from AMN 24(2):

Sample No.:	MET 00427
Location:	Meteorite Hills
Field No.:	13749
Dimensions (cm):	3.5x2.5x2.0
Weight (g):	18.558
Meteorite Type:	Howardite

Macroscopic Description: Kathleen McBride
Chocolate brown fusion crust covers 90% of this meteorite. The crust has a slight sheen to it and has polygonal fractures. The interior consists of a gray matrix with small inclusions of various colors. This meteorite is soft and moderately friable.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach


Plane-Polarized Light	Cross-Polarized Light

The section shows a groundmass of comminuted pyroxene and plagioclase (up to 1 mm) with large (6 mm) coarse-grained diogenite fragments and a single mm-sized impact melt spherule. Pyroxene includes orthopyroxene (Fs₄₀Wo_1-2) and exsolved pyroxenes of Fs₃₇Wo₄ to Fs₁₅Wo₃₈. The Fe/Mn ratio is ~30. Plagioclase is An_76-93Or_0-1. The meteorite is a howardite.

Data from:
  MB86
  Table A1
  Line 31:

Mass (g):	18.6
Class:	How
Weathering grade:	B
Ferrosilite (mol%):	14-41

Catalogs:

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 24(2) (2001), JSC, Houston
Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(79° 41'S, 155° 45'E)
Recommended::	(79° 41'S, 155° 45'E)

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

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Revision
history:

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