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| Allan Hills A81016 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A81016 This is an OFFICIAL meteorite name. Abbreviation: ALHA81016 This meteorite may also be called Allan Hills 81016 (ALH 81016) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  3.85 kg | ||||||||||||||||||||
| Classification history: |
This is 1 of 12583 approved meteorites (plus 8 unapproved names) classified as L6. [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.: ALHA81016 Location: Allan Hills Field No.: 1635 Weight (gms): 3850.2 Meteorite Type: L6 Chondrite
Physical Description: Carol Schwarz This specimen has a thin, patchy, remnant fusion crust. Most of the sample is smooth and has weathered to a dark reddish-brown color. Distinct chondrules up to ~4 mm in diameter are visible as well as some large mineral grains. A small amount of white deposit has formed along the hair-line fractures. The interior is a lighter brown-green color. No chondrules are distinguishable. However, a large (~4 mm) mineral grain with distinct cleavage faces was exposed. Dimensions: 15 x 12 x 11 cm.
Petrographic Description: Brian Mason Chondrules are sparse and poorly defined, merging with the granular ground-mass, which consists largely of olivine and pyroxene, with minor amounts of plagioclase, nickel-iron, and troilite, and accessory chromite. A moderate amount of brown limonitic staining is present along grain boundaries. Microprobe analyses give the following compositions: olivine, Fa5; orthopyroxene, Fs21; plagioclase, An11. The meteorite is an L6 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 539: |
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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 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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