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| Allan Hills A81017 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills A81017 This is an OFFICIAL meteorite name. Abbreviation: ALHA81017 This meteorite may also be called Allan Hills 81017 (ALH 81017) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  1434 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 7139 approved meteorites (plus 4 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 6(1):
Sample No.: ALHA81017 Location: Allan Hills Field No.: 1494 Weight (gms): 1434.4 Meteorite Type: L5 Chondrite
Physical Description: Carol Schwarz, This specimen consists of two pieces that cannot be fit together, but are obviously the same stone. Each piece has several small patches of dark fusion crust. The samples have a rough texture and are reddish-brown. The matrix is gray with small white and gray inclusions or chondrules. A gray weathering rind was exposed where chips were broken off. Oxidation haloes are also present. Dimensions: 13.5 x 8 x 7 cm and 10 x 9 x 5.5 cm.
Petrographic Description: Brian Mason Chondrules are moderately abundant, ranging up to 1.8 mm across, but their margins tend to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Microprobe analyses give the following compositions: olivine, Fa25; orthopyroxene, Fs21; one grain of diopside, Wo41Fs8, was noted. The meteorite is classified as an L5 chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 540: |
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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 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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