Hydrated minerals on asteroids in the Main Belt

Details Hydrated minerals on asteroids in the Main Belt Hydrated minerals on asteroids in the Main Belt

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..377d&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.377

Physics

Scientific paper

Knowledge of the hydrated mineral inventory on the asteroids is important for deducing the origin of Earth's water, interpreting the meteorite record and unravelling the processes occurring during the earliest times of our Solar System history. Observations show that hydrated minerals are common in the mid/outer main asteroid belt. The mechanisms responsible for such hydration are not clear, and the rotational variations observed in several diagnostic absorption features suggest that hydration was uneven. The presence of hydrated minerals on a body can be explained if that body had water ice and a source of heat to melt that ice. Heating sources could be both the 26Al (if the heat is present in the early formation times) and the heat generated by a collision. In the meteorite collection, hydrated minerals are found mostly among the carbonaceous chondrites, in particular the CI, CM, and CR groups.

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