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| Thiel Mountains 82407 | |||||||||||||||||||||
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| Basic information | Name: Thiel Mountains 82407 This is an OFFICIAL meteorite name. Abbreviation: TIL 82407 Observed fall: No Year found: 1982 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  221 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 2062 approved meteorites (plus 5 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) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 7(1):
Sample No.: TIL82407 Location: Thiel Mountains Field No.: 2771 Weight (gms): 220.8 Meteorite Type: L4 Chondrite
Physical Description: Roberta Score TIL82407 is an angular, three flat sided, oblong shaped stone that is completely covered with brownish-black fusion crust. Abundant oxidation halos are obvious on the exterior. What fresh material is present is dark gray in color while most of the -interior has weathered to a deep reddish-brown color. Dimensions: 9.5 x 4.5 x 3 cm
Petrographic Description: Brian Mason The section shows a close-packed aggregate of chondrules, up to 3 mm in diameter, with interstitial nickel-iron and troilite and fine-grained olivine and pyroxene. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, barred olivine, and radiating 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 Fs20. The meteorite is an L4 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 5471: |
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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:
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Statistics: This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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| Revision history: |
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