Meteoritical Bulletin: Entry for Graves Nunataks 98171

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Graves Nunataks 98171

Basic information

Name: Graves Nunataks 98171
This is an OFFICIAL meteorite name.
Abbreviation: GRA 98171
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 8 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	L3.8
Antarctic Meteorite Newsletter:	AMN 23(1)	(2000)	L3.8
Meteoritical Bulletin:	MB 84	(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

Writeup from AMN 23(1):

Sample No.:	GRA 98171
Location:	Graves Nunataks
Dimensions (cm):	2.0x2.0x1.0
Weight (g):	8.000
Meteorite Type:	L3 Chondrite (estimated 3.8)

Macroscopic Description: Kathleen McBride
Less then 5 % of the exterior of this ordinary chondrite has some rough black fusion crust. The interior is rusty with evaporites visible. It has a high metal content.

Thin Section (, 2) Description: Tim McCoy
The section exhibits numerous large, well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is common. The meteorite is highly weathered. Silicates are unequilibrated; olivines range from Fa_7-25, with most grains Fs_22-24, and pyroxenes are Fs_4-20. The meteorite if an L3 chondrite (estimated subtype 3.8).

Data from:
  MB84
  Table A1
  Line 170:

Origin or pseudonym:	Lower Central
Mass (g):	8
Class:	L3.8
Weathering grade:	CE
Fayalite (mol%):	7-25
Ferrosilite (mol%):	4-20

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 23(1) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
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 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page