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Grosvenor Mountains 95533
Basic information Name: Grosvenor Mountains 95533
     This is an OFFICIAL meteorite name.
Abbreviation: GRO 95533
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 613 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 19(2)  (1996)  Eucrite-unbr
Meteoritical Bulletin:  MB 82  (1998)  Eucrite-br
NHM Catalogue:  5th Edition  (2000)  Eucrite-br
MetBase:  v. 7.1  (2006)  Eucrite
Recommended:  Eucrite-br    [explanation]

This is 1 of 167 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 19(2):
Sample No.:GRO95533
LocationGrosvenor Mountains
Dimensions (cm):13.2 x 7.1 x 5.8
Weight (g):613.2
Meteorite Type:Eucrite (unbrecciated)

Macroscopic Description: Robbie Ann Score

Shiny black fusion crust with well-developed flow lines covers one half of this pretty eucrite. The other surface is broken and shows minor oxidation. The interior has coarse grained graphic intergrowths of plagioclase and pyroxene. Some brown oxidation is scattered throughout.

Thin Section (,5) Description: Brian Mason

The section shows a granular aggregate of pyroxene and plagioclase (grains up to 0.9 mm). The meteorite is unbrecciated, but the individual pyroxene crystals have been granulated. Microprobe analyses show essentially uniform compositions; pyroxene, Wo2-6 Fs60-63; plagioclase, An89-90. The meteorite is a eucrite.

Data from:
  MB82
  Table A1
  Line 167:
Mass (g):613.2
Class:Eu "br"
Weathering grade:A/B
Ferrosilite (mol%):60-63
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 19(2) (1996), JSC, Houston
Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 40'S, 175° 0'E)
     Recommended::   (85° 40'S, 175° 0'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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