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| Allan Hills A79019 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A79019 This is an OFFICIAL meteorite name. Abbreviation: ALHA79019 This meteorite may also be called Allan Hills 79019 (ALH 79019) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  12.1 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 6170 approved meteorites (plus 5 unapproved names) classified as H6. [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.: ALHA79019 Location: Allan Hills Field No.: 1193 Weight (gms): 12.1 Meteorite Type: H6 Chondrite
Physical Description: Roberta Score Brownish-black fusion crust covers three surfaces of this angular stone. The other three surfaces are fractured surfaces. Only one of these surfaces is relatively unweathered with inclusions visible in the gray colored matrix. Chipping revealed a weathering rind from <1 mm to 3 mm thick. The interior material is light gray in color with obvious metal. Dimensions: 2 x 2 x 1.5 cm.
Petrographic Description: Brian Mason Chondrules are sparse and poorly developed, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of plagioclase, nickel-iron, and troilite. A minor amount of limonitic staining is present in association with the nickel-iron grains. Microprobe analyses gave the following compositions: olivine, Fa17; pyroxene, Fs15; plagioclase, An12. The meteorite is classified as an H6 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 457: |
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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 40744 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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