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| Allan Hills A81034 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A81034 This is an OFFICIAL meteorite name. Abbreviation: ALHA81034 This meteorite may also be called Allan Hills 81034 (ALH 81034) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  255 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 10254 approved meteorites (plus 18 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.: ALHA81034 Location: Allan Hills Field No.: 1286 Weight (gms): 254.9 Meteorite Type: H5 Chondrite
Physical Description: Roberta Score Black fusion crust covers 50% of this meteorite. Several regmaglypts are present on one surface. The broken surfaces have weathered to a deep reddish-brown color. Chipping revealed an interior that is uniformly mottled with oxidation. Inclusions are obvious. Dimensions: 7 x 6 x 4 cm.
Petrographic Description: Brian Mason Chondrules are fairly abundant but are poorly defined, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene with minor amounts of nickel-iron and troilite. Limonite veinlets and brown limonitic staining are present throughout the section. Microprobe analyses give the following compositions: olivine, Fa19; orthopyroxene, Fs17. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 557: |
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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:
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Statistics: This is 1 of 40744 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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