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Allan Hills 82103 | |||||||||||||||||||||
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Basic information | Name: Allan Hills 82103 This is an OFFICIAL meteorite name. Abbreviation: ALH 82103 Observed fall: No Year found: 1982 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 2.53 kg | ||||||||||||||||||||
Classification history: |
This is 1 of 11505 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
Writeup |
Writeup from AMN 7(1):
Sample No.: ALH82103 Location: Allan Hills Field No.: 2907 Weight (gms): 2529.2 Meteorite Type: H5 Chondrite
Physical Description: Carol Schwarz A slightly weathered fusion crust covers nearly all of this meteorite. Regmaglypts occur on several faces. Surfaces not having fusion crust are weathered but a few small clasts are visible. The interior consists of gray matrix dotted with oxidation. A 1-2 mm thick weathering rind was exposed. Dimensions: 14 x 11 x 9 cm
Petrographic Description: Brian Mason Chondrules are moderately abundant but may be poorly defined, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite, and a little fine-grained plagioclase. Moderate weathering is indicated by brown limonitic staining around metal grains. Microprobe analyses give the following compositions: olivine, Fa17; pyroxene, Fs16. The meteorite is an H5 chondrite. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 842: |
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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: |
Statistics: This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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Revision history: |
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