The Martian meteorite NWA 7397 was found in 2012 in Morocco's Sahara Desert. Scientists believe it was part of a chunk of Mars that was chipped from the planet when an asteroid impacted it, Space.Com reported.
At 621 gm, the sample going up for sale is the larger portion of the meteorite that landed on Earth; the rest of that rock was recently bought by a museum, according to Heritage Auctions in US, which is handling the sale.
The NWA 7397 meteorite is going on sale on June 2 as part of a large collection of meteorites, fossils, and insects preserved in amber.
"The specimens in this sale represent some of the finest fossils, meteorites, and natural history items I have had the privilege to handle," Craig Kissick, associate director of nature and science for Heritage Auctions, said.
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At 8.9 kg, that specimen is much larger than the Martian meteorite, and features the largest example of gem-like olivine crystals ever collected, embedded in a silver nickel-ore matrix.
A third space rock, a 7.6 kg muonionalusta iron meteorite, has been carved and polished into a "modern work of art", according to Heritage Auctions, and should bring in at least USD 18,000.