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| Allan Hills A80106 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A80106 This is an OFFICIAL meteorite name. Abbreviation: ALHA80106 This meteorite may also be called Allan Hills 80106 (ALH 80106) in publications. Observed fall: No Year found: 1980 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  432 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 4(2):
Sample No.: ALHA80106 Location: Allan Hills Field No.: 1021, 1022 Weight (gms): 432.2 Meteorite Type: H4 Chondrite
Physical Description: Carol Schwarz ALHA80106 consists of five pieces, one of which had a different field number. That piece plus three others fit together. The fifth piece does not. The sample has patches of shiny black fusion crust on all sides except T which appears to be a fracture surface. Areas devoid of fusion crust are smooth and reddish brown. The interior of this stone is totally weathered. Dimensions: 6 x 9.5 x 10 cm.
Petrographic Description: Brian Mason Chondritic structure is well developed, with chondrules ranging from 0.2-1.2 mm across; the commonest types are granular and porphyritic olivine, barred olivine, and fine-grained radiating pyroxene. The chondrules are set in a fine-grained granular groundmass of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Some of the pyroxene is polysynthetically twinned clinobronzite. Weathering is pervasive, with brown limonitic staining throughout the section. Microprobe analyses show uniform olivine com-position (Fa19) and moderately variable pyroxene (Fa16-19, average Fs17). The meteorite is classified as an H4 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 497: |
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| References: | Published in Antarctic Meteorite Newsletter 4(2) (1981), 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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| Revision history: |
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