header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 22 Nov 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Thiel Mountains 82406
Basic information Name: Thiel Mountains 82406
     This is an OFFICIAL meteorite name.
Abbreviation: TIL 82406
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 152 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 7(2)  (1984)  L4
Meteoritical Bulletin:  MB 76  (1994)  L4
NHM Catalogue:  5th Edition  (2000)  L4
MetBase:  v. 7.1  (2006)  L4
Recommended:  L4    [explanation]

This is 1 of 1707 approved meteorites (plus 4 unapproved names) classified as L4.   [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(2):

Sample No.: TIL82406

Location: Thiel Mountains

Field No.: 2764

Weight (gms): 152.0

Meteorite Type: L4 chondrite

Physical Description: Roberta Score

The overall shape of TIL82406 is angular with subrounded edges. Dull black fusion crust covers most of the store. The dark gray interior contains numerous inclusions and oxidation is evenly scattered throughout. Dimensions: 5.5 x 5.0 x 3.5 cm

Petrographic Description: Brian Mason

The section shows a close-packed aggregate of chondrules, up to 2 mm across, in a small amount of matrix consisting of fine-grained olivine and pyroxene and coarser grains of nickel-iron and troilite. The commonest types of chondrules are porphyritic olivine and olivine-pyroxene, and fine-grained pyroxene; much of the pyroxene is polysynthetically twinned clinobronzite. Brown limonitic staining pervades the section. Microprobe analyses give the following compositions: olivine, Fa23, pyroxene somewhat variable, mean Fs19. The meteorite is an L4 chondrite.

Data from:
  MB76
  Table 2
  Line 5470:
Origin or pseudonym:Moulton Escarpment
Mass (g):152
Class:L4
Weathering grade:B
Fayalite (mol%):23
Ferrosilite (mol%):19
Comments:26Al=58±4
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 7(2) (1984), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 15'S, 91° 0'W)
     Recommended::   (85° 9' 56"S, 94° 37' 25"W)
Note: the NHM and MetBase coordinates are 35.1 km apart

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page