Meteoritical Bulletin: Entry for Grosvenor Mountains 95546

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Grosvenor Mountains 95546

Basic information

Name: Grosvenor Mountains 95546
This is an OFFICIAL meteorite name.
Abbreviation: GRO 95546
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 201 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 20(2)	(1997)	L3.8
Meteoritical Bulletin:	MB 82	(1998)	L3.8
NHM Catalogue:	5th Edition	(2000)	L3.8
MetBase:	v. 7.1	(2006)	L3.8
Recommended:			L3.8 [explanation]

This is 1 of 69 approved meteorites classified as L3.8. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Writeup

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Writeup from AMN 20(2):

Sample No.:	GRO95546
Location:	Grosvenor Mountains
Dimensions (cm):	7.0x3.0x4.0
Weight (g):	200.54
Meteorite Type:	L3 Chondrite (estimated L3.8)

gro95546

Macroscopic Description: Kathleen McBride
The exterior of this ordinary chondrite has some patches of black fusion crust. Most of the fusion crust has weathered away. Iridescent oxidation halos and some evaporites are present on the exterior surface. The interior is gray with light chondrules ~ 1 mm in size. Rust is abundant especially around the edges and forms an oxidation rind. Some metal is visible.

Thin Section (,2) Description: Brian Mason
The section shows an aggregate of chondrules, chondrule fragments and silicate grains with minor amounts of nickel-iron and troilite. Minor weathering is indicated by some limonitic staining around metal grains. Microprobe analyses show olivine and pyroxene of variable compositions: olivine, Fa9-25, mean Fa19; pyroxene, Fs12-27. The meteorite is classified as an L3 chondrite (estimated L3.8).

Data from:
  MB82
  Table A1
  Line 180:

Origin or pseudonym:	Outer Cecily
Mass (g):	200.8
Class:	L3.8
Weathering grade:	B/Ce
Fayalite (mol%):	9-25
Ferrosilite (mol%):	12-27
Comments:	NTL=3.8±0.1

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 20(2) (1997), JSC, Houston
Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
courtesy Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Antarctica

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

Statistics:
This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
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