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Lawrence Grossman delivers his lecture "Mineral Condensation" on the third morning (Aug. 12, 1976) at Gregynog for the 1976 Workshop on Isotopic Anomalies, which was organized by D. Clayton. See 1976 Gregynog Group for more details of this historic workshop. The slide shows trace element concentrations in Allende Ca-Al-rich inclusions, which he showed to be chemically similar to those in a solid in chemical equilibrium with vapor at high temperature (1600-2000 K). Grossman also coauthored the work in 1973 with R. Clayton and Mayeda that discovered the excess 16O anomaly within these CAI.

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