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| Allan Hills A77281 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A77281 This is an OFFICIAL meteorite name. Abbreviation: ALHA77281 This meteorite may also be called Allan Hills 77281 (ALH 77281) in publications. Observed fall: No Year found: 1977 or 1978 Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)] Mass:  1231 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 12780 approved meteorites (plus 11 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 1(3):
This text was reprinted from AMN 1(3) in AMN 4(1). In some cases, it may be an updated version from the original. Sample No.: ALHA77281 Location: Allan Hills Field No.: Y78010801 Weight (gms): 1231.0 Meteorite Type: L6 Chondrite
Physical Description: is appears to Specimen be a complete specimen. A brownish-black fusion crust, with polygonal fractures, approximately 2 mm thick, covers nearly 90% of the meteorite's exterior surface. The B surface is in part void of fusion crust. Many inclusions (2-5 mm dia.) are present on this iron oxide stained surface. Fractures are present on the surface of the specimen and post-chipping observations revealed that weathering occurred along these fracture surfaces. The interior portion of the meteorite, away from fractures, is not weathered. Specimen's dimensions: ~13.0x10.5x6.5 cm.
Petrographic Description: Brian Mason This meteorite resembles ALHA77280 closely, in structure, mineralogy, composition of olivine, orthopyroxene, and plagioclase, and in degree of weathering. Fusion crust is present along one edge of the section. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 231: |
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| References: | Published in Antarctic Meteorite Newsletter 1(3) (1978), 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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