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It has been argued that the stable isotopic composition of the element vanadium (V) provides a potential indicator of the effects high-energy irradiation early in Solar System development. Such irradiation would produce enrichment in the minor isotope, 50 V compared with the 400 times more abundant 51 V (Gounelle et al., 2001; Lee et al., 1998). Here we show that the vanadium isotopic...
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