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Allan Hills 84001 (ALH84001) is a fragment of a Martian meteorite that was found in the Allan Hills in Antarctica on December 27, 1984, by a team of American meteorite hunters from the ANSMET project.
5 days ago · An Update from ALH84001. New research funded by elements of the NASA Astrobiology Program shows that the organic material in the famous Martian meteorite ALH84001 was not formed biologically, but rather by geochemical interactions between water and rock. The Allan Hills 84001 meteorite.
Clayton (1993) and the above evidence, ALH84001 was reclassified as a Martian meteorite (Score and Mittlefehldt 1993; Mittlefehldt 1994). As explained below, this Martian meteorite has been found to have a very old age (~ 4.5 to 4.0 b.y.), but it has suffered several impact events during its history, as evidenced by annealed granular bands and ...
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ALH84001, meteorite determined to have come from Mars and the subject of a contentious scientific claim that it contains the remains of ancient life indigenous to the planet. Recovered from the Allan Hills ice field of Antarctica in 1984, the 1.9-kg (4.2-pound) igneous rock is thought to have.
- Harry Y. Mcsween
What is ALH 84001, the Mars meteorite with the possible fossils? ALH 84001 is a meteorite, a rock that fell to Earth from space. It was found in December 1984 in Antarctica by a U.S. meteorite-hunting expedition. When it was found, ALH 84001 weighed about 4 and 3/4 pounds (1.93 kilograms).
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Is ALH84001 a Martian meteorite?
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In examining the martian meteorite ALH84001 we have found that the following evidence is compatible with the existence of past life on Mars: (i) an igneous Mars rock (of unknown geologic context) that was penetrated by a fluid along fractures and pore spaces, which then became the sites of secondary mineral formation and possible biogenic ...
Feb 1, 2022 · The Allan Hills 84001 (ALH 84001) martian meteorite is an approximately four billion-year-old igneous rock composed primarily of the mineral orthopyroxene. It was discovered in Antarctica in 1984 and subsequently studied for its record of the early geological history of Mars.
