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Nakhlite

Nakhlites are a group of Martian meteorites, named after the first one, Nakhla meteorite.

History
A 2017 study dated them to at least four different eruptions from 1416 ± 7 Ma to 1322 ± 10 Ma. It has been shown that the nakhlites were suffused with liquid water around 620 million years ago and that they were ejected from Mars around 10.75 million years ago by an asteroid impact. They fell to Earth within the last 10,000 years. ==Possible source crater in Elysium==
Possible source crater in Elysium
A 6.5 km diameter crater at in the volcanic plains to the northwest of Elysium Mons has been identified as a possible source. Based on the crater dimensions, the inferred growth rate of the source volcano during that interval is 0.4–0.7 m per Ma, far slower than would be expected for a terrestrial volcano, and implying that Martian volcanism had slowed greatly by that point in history. ==Samples==
Samples
The following samples of nakhlites are known. • Nakhla meteorite (about 40 samples, total estimated weight ), vicinity of Nakhla, Abu Hommos district, Alexandria Governorate, Egypt, 1911 • Governador Valadares meteoriteLafayette meteorite, 800g, before 1931 • NWA817, 104g, Morocco, 2000 • NWA998, 456g, Morocco, 2001 • Y000593 (Yamato 593), • Y000749, • Y000802, 22g ==See also==
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