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Allan Hills A78130 | |||||||||||||||||||||||||
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Basic information | Name: Allan Hills A78130 This is an OFFICIAL meteorite name. Abbreviation: ALHA78130 This meteorite may also be called Allan Hills 78130 (ALH 78130) in publications. Observed fall: No Year found: 1978 Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)] Mass: 2.73 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 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.: ALHA78130 Location: Allan Hills Field No.: 336 Weight (gms): 2733.0 Meteorite Type: L6 Chondrite
Physical Description: This specimen, 18 x 9 x 9 cm , is completely covered with a thin, dull black fusion crust, with the exception, of an ~4 x 4 cm. area on the W surface and along the edges of the sample. Preferential weathering of the fusion crust around included clasts occurs. The sample is covered with shallow regmaglypts and several large fractures penetrate the sample. Chipping of the sample during processing revealed a severely oxidized interior for ~70% of the sample. The unweathered portion is light gray and speckled with light and dark clasts, ~1-2 mm.. Several larger (~0.5 cm.) gray clasts were noted. Small veins of a darker gray material, ~2-3 cm. in length and 3 mm. wide, are present in the lighter matrix material.
Petrographic Description: Brian Mason Chondrules are sparse and poorly defined, their borders tending to merge with the granular groundmass, which consists largely of olivine and pyroxene with minor subequal amounts of nickel-iron and troilite, plagioclase, and accessory chromite. A moderate amount of brown limonitic staining is present around the nickel-iron grains. Microprobe analyses give the following compositions: olivine, Fa25; pyroxene, Fs21; plagioclase, An10. The meteorite is an L6 chondrite. ALHA78130, 78131 are L6 chondrites similar in all respects to ALHA78126. | ||||||||||||||||||||||||
Data from: MB76 Table 2 Line 353: |
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Catalogs: |
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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: |
Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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Revision history: |
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