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Allan Hills 84001 (ALH84001 [1]) 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. Like other members of the shergottite–nakhlite–chassignite (SNC) group of meteorites, ALH84001 is thought to have originated on Mars ...
A Martian meteorite is a rock that formed on Mars, was ejected from the planet by an impact event, ... Allan Hills 84001 (ALH 84001) Among these, ...
During the Apollo program, McKay provided geology training to the first men to walk on the Moon in the late 1960s. McKay was the first author of a scientific paper postulating past life on Mars on the basis of evidence in Martian meteorite ALH 84001, which had been found in Antarctica. [2]
The exact worth of a meteorite varies depending on the specific type of meteorite in question. An 82-pound iron meteorite originating from an asteroid recently sold for $44,100 — about $540 per ...
They collected their first lunar meteorite, ALHA 81005, during the 1981–82 field season in the Middle Western Icefield. The Martian meteorite ALHA 77005 was collected in 1977 at Allan Hills, while ALH 84001 was collected on the Allan Hills Far Western Icefield during the 1984–85 season.
In 1996, the possibility of life on Mars was raised when apparent microfossils were thought to have been found in the Martian meteorite ALH84001. This hypothesis was eventually rejected, but led to a renewed interest in a Mars sample return. [21]
ALH 84001 is an extraterrestrial example of an orthopyroxenite. It is an achondrite meteorite from Mars. Orthopyroxenite is an ultramafic and ultrabasic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite. It can have up to a few percent of olivine and clinopyroxene.
The Allan Hills 84001 meteorite, discovered in Antarctica in 1984, is believed to have originated on Mars but it has an entirely different composition than the SNC group. In 1996, it was announced that this meteorite might contain evidence for microscopic fossils of Martian bacteria. However, this finding remains controversial. [97]