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| Allan Hills A77280 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A77280 This is an OFFICIAL meteorite name. Abbreviation: ALHA77280 This meteorite may also be called Allan Hills 77280 (ALH 77280) in publications. Observed fall: No Year found: 1977 or 1978 Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)] Mass:  3.23 kg | ||||||||||||||||||||
| 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.: ALHA77280 Location: Allan Hills Field No.: Y78010512 Weight (gms): 3226.0 Meteorite Type: L6 Chondrite
Physical Description: Specimen is angular. Approximately 75% of the exterior surface is covered with a brownish-black fusion crust. In several places the fusion crust has spalled away revealing a heavily oxidized material. One face of the specimen is a broken surface, which is light gray and moderately iron oxide stained. The surface is irregular and has numerous linear fractures and a few 1-2 mm spherical inclusions. Approximate dimensions: 18.5x13.0x10.0 cm. When the specimen was removed from storage for initial processing, Antarctic snow was still present on the meteorite's exterior surface.
Petrographic Description: Brian Mason This meteorite resembles ALHA77273 and 77277 closely, in structure, mineralogy, and composition of the olivine, orthopyroxene, and plagioclase. Weathering appears to be quite extensive, most of the section being stained brown by limonitic material. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 230: |
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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 44547 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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