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| Allan Hills A78078 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills A78078 This is an OFFICIAL meteorite name. Abbreviation: ALHA78078 This meteorite may also be called Allan Hills 78078 (ALH 78078) in publications. Observed fall: No Year found: 1978 Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)] Mass:  290 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 11577 approved meteorites (plus 6 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 3(2):
This text was reprinted from AMN 3(2) in AMN 4(1). In some cases, it may be an updated version from the original. Sample No.: ALHA78078 Location: Allan Hills Field No.: 279 Weight (gms): 290.3 Meteorite Type: L6 Chondrite
Physical Description: This 6.0 x 4.5 x 8.0 cm. stone is totally covered with thin, black fusion crust with the exception of the corners of the specimen, which have been removed. Processing of the meteorite revealed a light gray matrix, speckled with light and dark clasts. Fresh metallic material is also present.
Petrographic Description: Brian Mason Chondrules are sparse and poorly defined, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor subequal amounts of nickel-iron and troilite, some plagioclase, and accessory chromite. Some of the nickel-iron grains are unusually large, up to 2.4 mm across. Minor limonitic staining is present around some of the metal grains. Microprobe analyses give the following compositions: olivine, Fa24; orthopyroxene, Fs20; plagioclase, An 11. The meteorite is classified as an L6 chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 310: |
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| References: | Published in Antarctic Meteorite Newsletter 3(2) (1980), 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 40849 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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