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The precise knowledge of the initial 26 Al/ 27 Al ratio [( 26 Al/ 27 Al) 0 ] is crucial if we are to use the very first solid objects formed in our Solar System, calcium–aluminum-rich inclusions (CAIs) as the “time zero” age-anchor and guide future work with other short-lived radio-chronometers in the early Solar System, as well as determining the inventory...
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