Bennu Asteroid Apatite Minerals Lock Rare Earths at 900 Times Cosmic Level, OSIRIS-REx Finds
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Summary
Asteroid Bennu apatite minerals carry rare earth concentrations up to 900 times the cosmic baseline, a synchrotron study reveals. OSIRIS-REx samples encode a 4.5-billion-year-old record of asteroid hydrothermal chemistry; the REE pattern diverges from Ryugu, revealing distinct early solar system aqueous alteration histories across primitive carbonaceous bodies.
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