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Published online 19 December 2008 | Nature | doi:10.1038/news.2008.1329
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Carbonate deposits found on Mars
Long-lost mineral could help explain planet's thin atmosphere.
After a search that has gone on for decades, scientists have announced the discovery of substantial deposits of carbonate rocks on Mars. Although the new rocks are not from the bed of a long-lost ocean, as would once have been hoped, the discovery is still fanning hopes that the rocks might hold preserved traces of organic matter from the planet's early history.
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