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| Allan Hills A81018 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A81018 This is an OFFICIAL meteorite name. Abbreviation: ALHA81018 This meteorite may also be called Allan Hills 81018 (ALH 81018) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  2.24 kg | ||||||||||||||||||||
| Classification history: |
This is 1 of 8597 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.: ALHA81018 Location: Allan Hills Field No.: 1421 Weight (gms): 2236.9 Meteorite Type: L5 Chondrite
Physical Description: Roberta Score ALHA81018, an angular shaped stone, is entirely covered with dull black fusion crust. Several cracks penetrate the stone. The chip obtained for thin section has an approximately one centimeter thick continuous weathering rind. The center of the area exposed is light gray in color with several darker gray colored rounded inclusions. Dimensions: 13.5 x 11 x 10 cm.
Petrographic Description: Brian Mason This section closely resembles that of ALHA81017, which suggests that these two specimens may be paired. Microprobe analyses give the following compositions: olivine, Fa24; orthopyroxene, Fs21; a little diopside Wo42Fs9, is present. The meteorite is classified as an L5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 541: |
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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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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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