Mike Drake had an undergrad for a summer, Melanie Kreutzberger, who produced a nice set of experiments on the volatility of alkali elements. A Di-An-Ab glass, doped with Na, K, Rb, and Cs, was suspended in a furnace for different time durations and the volatile loss of these elements was then measured using the electron microprobe. In our experiments Cs was the most volatile, but this did not seem to be reflected in the Rb/Cs ratios of lunar rocks. Therefore, we argued that our experiments were not consistent with the ideas of Ted Ringwood (ANU) who advocated that the Moon...

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