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Allan Hills A79025 | |||||||||||||||||||||
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Basic information | Name: Allan Hills A79025 This is an OFFICIAL meteorite name. Abbreviation: ALHA79025 This meteorite may also be called Allan Hills 79025 (ALH 79025) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 1208 g | ||||||||||||||||||||
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 4(1):
Sample No.: ALHA79025 [printed as 77025] Location: Allan Hills Field No.: 1050 Weight (gms): 1208.0 Meteorite Type: H5 Chondrite
Physical Description: Carol Schwarz This is not a complete specimen. Thin black fusion crust covers only two surfaces. The other surfaces are weathered and reddish-brown in color with some inclusions visible. The meteorite was very hard and difficult to chip but no unweathered material was exposed. Dimensions: 10 x 13 x 7 cm.
Petrographic Description: Brian Mason Chondrules are well-defined, 0.3-1.2 mm in diameter; they are set in a granular groundmass of olivine and pyroxene, with minor amounts of nickel-iron and troilite, and accessory chromite. Weathering is extensive, with veins and patches of limonite throughout the section. Microprobe analyses show olivine (Fa17) and orthopyroxene (Fs15) of uniform composition; a few small grains of plagioclase (An13) were analysed. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 463: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 4(1) (1981), 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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