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Meteorite Hills 00425
Basic information Name: Meteorite Hills 00425
     This is an OFFICIAL meteorite name.
Abbreviation: MET 00425
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 118.3 g
NHM Catalogue:  5th Edition  (2000)  Diogenite
Antarctic Meteorite Newsletter:  AMN 24(2)  (2001)  Diogenite
Meteoritical Bulletin:  MB 86  (2002)  Diogenite
MetBase:  v. 7.1  (2006)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 498 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Writeup from AMN 24(2):
Sample No.: MET 00425
Location: Meteorite Hills
Field No.: 13562
Dimensions (cm):   5.5x5.5x3.5
Weight (g): 118.302
Meteorite Type: Diogenite
Macroscopic Description: Kathleen McBride
Brown/black fusion crust makes up less than 5% of the surface area of this meteorite. The exposed interior is yellowish-green in color and has large vugs or cavities where material has weathered away or been plucked. The interior is a very fine-grained cream-colored matrix loaded with pale green mm-sized euhedral crystals, small black specks (< 1 mm) and mm-sized rusty clasts that have stained the surrounding matrix. This meteorite is soft and moderately friable.

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

MET 00425 - Plane-Polarized Light MET 00425 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light
The section shows a groundmass of coarse comminuted pyroxene, with polycrystalline fragments with grain sizes up to 2.5 mm. Orthopyroxene has a composition of Fs15Wo1. The Fe/Mn ratio of the pyroxene is ~30. Stringers of SiO2 were found in igneous contact with orthopyroxene. The meteorite is a diogenite.

Data from:
  Table A1
  Line 29:
Mass (g):118.3
Weathering grade:B/C
Ferrosilite (mol%):15
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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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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above

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

     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)
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