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| Allan Hills A78127 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills A78127 This is an OFFICIAL meteorite name. Abbreviation: ALHA78127 This meteorite may also be called Allan Hills 78127 (ALH 78127) in publications. Observed fall: No Year found: 1978 Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)] Mass:  194.5 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 12281 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 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.: ALHA78127 Location: Allan Hills Field No.: 495 Weight (gms): 194.5 Meteorite Type: L6 Chondrite
Physical Description: Sample is covered with very thin, shiny fusion crust on the T, B, N and W surfaces. The S surface has remnant patches of fusion crust and the E surface is a fracture surface. The B surface is partially stained by iron oxidation. Where fusion crust is absent, the sample is reddish-brown. Polygonal fractures cover most surfaces. Chipping the sample during processing revealed that nearly the entire sample is severely weathered. One small area of the matrix is not severely weathered and is yellowish gray.
Petrographic Description: Brian Mason Chondritic structure is poorly developed, the sparse chondrules tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor subequal amounts of nickel-iron and troilite, a little plagioclase, and accessory chromite. Minor limonitic staining is associated with the metal grains. Microprobe analyses gave the following compositions: olivine, Fa24; orthopyroxene, Fs20; plagioclase, An10; and a single grain of diopside, Wo46En47Fs7. The meteorite is classified as an L6 chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 350: |
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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 43840 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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