Meteoritical Bulletin: Entry for MacAlpine Hills 02666

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MacAlpine Hills 02666

Basic information

Name: MacAlpine Hills 02666
This is an OFFICIAL meteorite name.
Abbreviation: MAC 02666
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 20.3 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 26(2)	(2003)	Howardite
Meteoritical Bulletin:	MB 88	(2004)	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

Comments:

Field number: 14149

Writeup

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Writeup from AMN 26(2):

Sample No.:	MAC 02666
Location:	MacAlpine Hills
Field No.:	14149
Dimensions (cm):	3.0x2.5x1.5
Weight (g):	20.273
Meteorite Type:	Howardite

MAC02666

Macroscopic Description: Kathleen McBride
A brown/black fusion crust covers over 50% of the exterior. Exposed interior is gray with white clasts. Some areas show plucking. The gray matrix has white to tan clasts. Some have black rims. A few angular black clasts are visible.

Thin Section (,4) Description: Tim McCoy, Linda Welzenbach
The section shows a groundmass of comminuted pyroxene (up to 1 mm) and plagioclase with fine- to coarse-grained basaltic clasts ranging up to 3 mm. It also contains clasts (up to 0.5 mm) of C1 carbonaceous chondrite material. Minerals include abundant orthopyroxene with compositions ranging from Fs_23-55Wo_2-4 (Fe/Mn ~30), a single augite of Fs₃₀, plagioclase (An_90-95) and SiO₂. The meteorite is a howardite.


Plane-Polarized Light	Cross-Polarized Light	Plane-Polarized Light	Cross-Polarized Light

Data from:
  MB88
  Table A1
  Line 79:

Mass (g):	20.273
Class:	How
Weathering grade:	B
Ferrosilite (mol%):	23-55

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 26(2) (2003), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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Photos:

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

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(84° 18' 48"S, 159° 42' 29"E)

Note: the MetBase and recommended coordinates are 13.9 km apart

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

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Revision
history:

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