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Graves Nunataks 98028
Basic information Name: Graves Nunataks 98028
     This is an OFFICIAL meteorite name.
Abbreviation: GRA 98028
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 22.4 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Acapulcoite
Antarctic Meteorite Newsletter:  AMN 23(1)  (2000)  Acapulcoite
Meteoritical Bulletin:  MB 84  (2000)  Acapulcoite
MetBase:  v. 7.1  (2006)  Acapulcoite
Recommended:  Acapulcoite    [explanation]

This is 1 of 73 approved meteorites classified as Acapulcoite.   [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites
Writeuphelp
Writeup from AMN 23(1):
Sample No.: GRA 98028
Location: Graves Nunataks
Dimensions (cm):   4.0x2.0x1.0
Weight (g): 22.440
Meteorite Type: Acapulcoite

Macroscopic Description: Kathleen McBride
A shiny, black fusion crust covers 90% of the exterior surface of this meteorite.  The interior matrix is fine-grained and rusty and has a high metal content.  It is very coherent.

Thin Section (, 2) Description: Tim McCoy
GRA98028 The section consists of an aggregate of fine-grained (0.25 mm grain size) olivine (Fa8-9), orthopyroxene (Fs8-10Wo1-2), augite (Fs5Wo46), plagioclase, metal and troilite. Relict chondrules are present.  Shock effects are minimal.  The meteorite is an acapulcoite.  The abundance of relict chondrules and paucity of micron-sized metal-sulfide veins are unusual for this group.  The meteorite is not paired with GRA 95209.

Data from:
  MB84
  Table A1
  Line 29:
Origin or pseudonym:Lower Central
Mass (g):22.4
Class:Acap
Weathering grade:C
Fayalite (mol%):8-9
Ferrosilite (mol%):8-10
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 23(1) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA   
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (86° 43'S, 141° 30'W)
     Recommended::   (86° 43'S, 141° 30'W)

Statistics:
     This is 1 of 38674 approved meteorites from Antarctica (plus 5051 unapproved names)
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