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| Allan Hills 83010 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills 83010 This is an OFFICIAL meteorite name. Abbreviation: ALH 83010 Observed fall: No Year found: 1983 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  395 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 15 approved meteorites classified as LL3.3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 8(1):
Sample No.: ALH83010 Location: Allan Hills Weight (g): 395.2 Field No.: 2144 Dimensions (cm): 10.5 x 8 x 2 Meteorite Type: L3 Chondrite
Macroscopic Description: Carol Schwarz Black to iridescent fusion crust occurs on one side of this meteorite fragment. The other surfaces are dark greenish gray with areas of iridescent reddish brown. Numerous chondrules (1-4 mm in diameter) as well as large clasts (the largest is 1.0 x 0.5 cm) are visible on the fracture surface. This sample is extremely coherent. The interior exposed consists of a dark matrix with numerous 1-mm-sized chondrules, gray to yellowish in color. Metal is present.
Thin Section (,3) Description: Glenn MacPherson Pervasive light limonitic staining suggests moderate weathering. Chondrules up to 2.5 mm diameter are sharply defined, and many contain clear brown isotropic glass. Pyroxene is mostly monoclinic and was found in the range Fs2 to Fs28. Olivine was found in the range Fa4 to Fa31. Metal is subequal with (or slightly less than) troilite in abundance. There are well defined sulfide rims around many chondrules. Two metal phases are present. Chromite is accessory but is generally very fine grained. This meteorite is probably an L3 chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 893: |
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| References: | Published in Antarctic Meteorite Newsletter 8(1) (1985), 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 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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