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| Allan Hills A80128 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A80128 This is an OFFICIAL meteorite name. Abbreviation: ALHA80128 This meteorite may also be called Allan Hills 80128 (ALH 80128) in publications. Observed fall: No Year found: 1980 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  138.2 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 5(1):
Sample No.: ALHA80128 Location: Allan Hills Field No.: 1026 Weight (gms): 138.2 Meteorite Type: H4 Chondrite
Physical Description: Roberta Score Dull black fusion crust covers all but one surface of this meteorite. Several large fractures penetrate the specimen. Chipping exposed a medium gray interior speckled with white and dark gray inclusions. Dimensions: 5 x 4.5 x 4 cm
Petrographic Description: Brian Mason Chondrules are prominent, ranging up to 0.9 mm in diameter. They are set in a granular groundmass of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Brown limonitic staining occurs throughout the section, being concentrated around the nickel-iron grains. Traces of fusion crust are present along one edge. Microprobe analyses gave the following compositions: olivine, Fa18; pyroxene, Fs16 (somewhat variable, Fs15-20); one grain of diopside, Wo45Fs7 was analyzed. The meteorite is classified as an H4 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 518: |
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| References: | Published in Antarctic Meteorite Newsletter 5(1) (1982), 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 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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