Rare Earth Elements in Acid Leaches and Residues from Whole Rock and Mineral Separates from Lunar Basalt
نویسنده
چکیده
aniv et a/ . (to be published), is that it arises from low energy (20-40 MeV) proton reactions on REE-rich interstellar grains. The reactions 139La(p.2a)' 32(:s(j3-)ll2Xe and 140Ce(p.n2a) 132Cs(j3-) 132Xe would be required to dominate. It is notewonhy that one of the few high temperature phases which is compatible with peak release temperatures above 1500 •c is perovskite. for" hich the REE have an affinity. suggesting that it may be the carrier phase for the 132Xe anomaly.
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تاریخ انتشار 2013