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Thiel Mountains 82401
Basic information Name: Thiel Mountains 82401
     This is an OFFICIAL meteorite name.
Abbreviation: TIL 82401
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 282 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 7(1)  (1984)  L6
Meteoritical Bulletin:  MB 76  (1994)  L6
NHM Catalogue:  5th Edition  (2000)  L6
MetBase:  v. 7.1  (2006)  L6
Recommended:  L6    [explanation]

This is 1 of 11460 approved meteorites (plus 6 unapproved names) classified as L6.   [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.: TIL82401

Location: Thiel Mountains

Field No.: 2746

Weight (gms): 281.6

Meteorite Type: L6 Chondrite

 

Physical Description: Carol Schwarz

Thin, dull black fusion crust is present on parts of three surfaces of this meteorite fragment. The other surfaces are smooth and reddish-brown. Chondrules (1-6 mm diameter) are visible on the exterior. A wide discontinuous weathering rind was exposed when this stone was chipped, as was fresh gray matrix with a minor amount of oxidation. Dimensions: 6.5 x 5.5 x 6 cm

 

Petrographic Description: Brian Mason

Chondrules are sparse and poorly defined, their margins merging with the granular groundmass, which consists of olivine and pyroxene with minor amounts of plagioclase, troilite, and nickel-iron. Brown limonitic staining surrounds the metal grains. Microprobe analyses give the following compositions: olivine, Fa25; pyroxene, Fs21; plagioclase, An10. The meteorite is an L6 chondrite.

Data from:
  MB76
  Table 2
  Line 5465:
Origin or pseudonym:Moulton Escarpment
Mass (g):281.6
Class:L6
Weathering grade:A/B
Fayalite (mol%):25
Ferrosilite (mol%):21
Comments:26Al=62±4
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° 9' 53"S, 94° 39' 4"W)
Note: the NHM and MetBase coordinates are 35.4 km apart

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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