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MacAlpine Hills 02703
Basic information Name: MacAlpine Hills 02703
     This is an OFFICIAL meteorite name.
Abbreviation: MAC 02703
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 19.3 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 399 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Field number: 14103
Writeuphelp
Writeup from AMN 26(2):
Sample No.: MAC 02703
Location: MacAlpine Hills
Field No.: 14103
Dimensions (cm):   3.5x2.5x2.25
Weight (g): 19.269
Meteorite Type: Howardite
    MAC02703

Macroscopic Description: Kathleen McBride
Shiny, black fusion crust covers ~50% of the exterior. Some areas actually look like they are wet. Interior is a concrete gray matrix with numerous clasts of various shapes, sizes and colors.

Thin Section (,4) Description: Tim McCoy, Linda Welzenbach

MAC 02703 - Plane-Polarized Light MAC 02703 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light
The section shows a groundmass of comminuted, compositionally zoned pyroxene (up to 3 mm) and plagioclase with fine- to coarse-grained basaltic clasts ranging up to 1 mm. Most of the pyroxene is orthopyroxene with compositions ranging from Fs26-40Wo2-3 (Fe/Mn ~ 30), a single augite of Fs19Wo43 and plagioclase An74-94. The meteorite is a howardite.
Data from:
  MB88
  Table A1
  Line 81:
Mass (g):19.269
Class:How
Weathering grade:B
Ferrosilite (mol%):26-40
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:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Geography:

Antarctica
Coordinates:
     Recommended::   (84° 19' 11"S, 159° 31' 16"E)
Note: the MetBase and recommended coordinates are 15.9 km apart

Statistics:
     This is 1 of 40849 approved meteorites from Antarctica (plus 4494 unapproved names)
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