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| Allan Hills A79031 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A79031 This is an OFFICIAL meteorite name. Abbreviation: ALHA79031 This meteorite may also be called Allan Hills 79031 (ALH 79031) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  2.7 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 11150 approved meteorites (plus 22 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 4(1):
Sample No.: ALHA79031 Location: Allan Hills Field No.: 1178 Weight (gms): 2.7 Meteorite Type: H5 Chondrite
Physical Description: Roberta Score The stone is totally weathered. ALHA79031 and ALHA79032 are probably the same meteorite based on Field Notes and hand specimen observation. Dimensions: 2.0 x 1.5 x 0.5 cm.
Petrographic Description: Brian Mason Chondritic structure is fairly well-developed, with chondrules ranging up to 1.5 mm across. The chondrules are set in a matrix of fine-to medium-grained olivine and pyroxene, with minor amounts of nickel-iron and troilite. Weathering is extensive, the section being pervaded with red-brown limonite. Microprobe analyses gave the following compositions: olivine, Fa16; pyroxene, Fs14; accessory merrillite was identified with the microprobe. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 468: |
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| References: | Published in Antarctic Meteorite Newsletter 4(1) (1981), 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 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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