Rare earth element selenochemistry of immiscible liquids and zircon at Apollo 14 - an ion probe study of evolved rocks on the moon

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Apollo 14 Flight, Ion Probes, Liquid Phases, Lunar Rocks, Rare Earth Elements, Zirconium Compounds, Chemical Reactions, Lunar Surface, Minerals, Moon, Samples, Lunar, Apollo 14 Mission, Rare Earth Elements, Chemistry, Liquid, Immiscibility, Zircon, Composition, Ion Probe Methods, Sims, Mass Spectrometry, Trace Elements, 14001, Description, Anomalies, Magma, Origin, Formation, Evolution, Glasses, Partitioning, Comparisons, Abundance, Patterns, 14321, Cerium, Europium

Scientific paper

Results are presented of trace-element analyses of three lunar zircons. The major-element and REE compositions were determined using electron microprobes, and a correction was made for zircon for Zr-Si-O molecular interferences in the La to Pr mass region. The three zircons were found to exhibit similar REE abundances and patterns. Results of the analyses confirm earlier studies (Hess et al., 1975; Watson, 1976; Neal and Taylor, 1989) on the partitioning behavior of trace elements in immiscible liquid-liquid pairs. The results also support the postulated importance of silicate liquid immiscibility in the differentiation of the upper mantle and crust of the moon.

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