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Allan Hills A81033 | |||||||||||||||||||||
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Basic information | Name: Allan Hills A81033 This is an OFFICIAL meteorite name. Abbreviation: ALHA81033 This meteorite may also be called Allan Hills 81033 (ALH 81033) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 252 g | ||||||||||||||||||||
Classification history: |
This is 1 of 11567 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 6(1):
Sample No.: ALHA81033 Location: Allan Hills Field No.: 1318 Weight (gms): 252.4 Meteorite Type: H5 Chondrite
Physical Description: Carol Schwarz This sample consists of six similar fragments. They have only small areas of remnant fusion crust and are mostly weathered. One of the smaller pieces was selected for thin section. Dimensions: 7 x 4.5 x 3 cm (largest piece)
Petrographic Description: Brian Mason Chondritic structure is well developed, but the chondrules tend to merge with the granular groundmass, which consists largely of olivine and pyroxene with minor amounts of nickel-iron and troilite. Weathering is extensive, with brown limonitic staining and small areas of limonite throughout the section. Microprobe analyses give the following compositions: olivine, Fa18; orthopyroxene, Fs16. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 556: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 6(1) (1983), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography: |
Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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Revision history: |
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