In spite of the high abundance of nickel (Ni) in igneous rocks and wide use of Ni in identifying the processes that govern planetary differentiation (e.g., McDonough & Sun, 1995;Palme & O'Neill, 2014), Ni stable isotopes have received limited attention (e.g., Elliott & Steele, 2017). Systematic Ni isotopic studies on terrestrial igneous rocks have only been made in the past few years (
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