The vanadium isotopic composition of L ordinary chondrites

Yongli Xue, Chun-hui Li, Yuhan Qi, Chuantong Zhang, Bingkui Miao, Fang Huang

Acta Geochimica
pp 1–8
https://doi.org/10.1007/s11631-018-0279-2

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“Stable isotopic data of meteorites are critical for understanding the evolution of terrestrial planets. In this study, we report high-precision vanadium (V) isotopic compositions of 11 unequilibrated and equilibrated L chondrites. Our samples show an average δ51V of − 1.25‰ ± 0.38‰ (2SD, n = 11), which is ~ 0.5‰ lighter than that of the bulk silicate Earth constrained by mantle peridotites. Isotopic fractionation in type 3 ordinary chondrites vary from − 1.76‰ to − 1.29‰, whereas the δ51V of equilibrated chondrites vary from − 1.37‰ to − 1.08‰. δ51V of L chondrites do not correlate with thermal metamorphism, shock stage, or weathering degree. Future studies are required to explore the reason for V isotope variation in the solar system.”