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Thiel Mountains 82400
Basic information Name: Thiel Mountains 82400
     This is an OFFICIAL meteorite name.
Abbreviation: TIL 82400
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 221 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 7(1)  (1984)  L5
Meteoritical Bulletin:  MB 76  (1994)  L5
NHM Catalogue:  5th Edition  (2000)  L5
MetBase:  v. 7.1  (2006)  L5
Recommended:  L5    [explanation]

This is 1 of 7126 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 7(1):

Sample No.: TIL82400

Location: Thiel Mountains

Field No.: 2751

Weight (gms): 220.8

Meteorite Type: L5 Chondrite

 

Physical Description: Carol Schwarz

Meteorite has only a few patches of fusion crust remaining on it. The exterior is friable, has a rough texture and reddish-brown color, and numerous gray-green chondrules (1-3 mm diameter) are present. The interior is light gray with some oxidation. Dimensions: 8 x 5 x 5 cm

 

Petrographic Description: Brian Mason

Chondrules are moderately abundant, and are set in a fine-grained granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Weathering is limited to brown limonitic staining around metal grains. Microprobe analyses give the following compositions: olivine, Fa25; pyroxene, Fs21. The meteorite is classified as an L5 chondrite.

Data from:
  MB76
  Table 2
  Line 5464:
Origin or pseudonym:Moulton Escarpment
Mass (g):220.8
Class:L5
Weathering grade:A/B
Fayalite (mol%):25
Ferrosilite (mol%):21
Comments:26Al=60±3
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 7(1) (1984), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 15'S, 91° 0'W)
     Recommended::   (85° 11' 3"S, 94° 9' 36"W)
Note: the NHM and MetBase coordinates are 30.3 km apart

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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Synonymshelp: Davis Escarpment (In NHM Cat)
Moulton Escarpment (In NHM Cat)
Thiel Mts. (From MetBase)

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