“Checking periodically, the first to notice in the Dana Lab, Dr. Frondel’s office, was the arrival of a safe, within which (Apollo 11 mission) moon rocks were to be kept. This was long before any arrivals. There was some security consciousness, I do not remember any ceremony of awareness of the arrival of lunar samples. These were times of social turmoil and maybe arrival was downplayed. But at some point we were all aware that, hey, there are moon rocks in the building. Wow! Depending on who you knew, you could get a look at some thin sections, and later, look over the shoulder of probe jocks. Once in a lifetime! Of a Population!” —Dr. Philip Goodell PhD, Geological Sciences, The University of Texas at El Paso.

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“I overlapped with Cliff during my time as a postdoc at Harvard. He was one of the great mineralogists that approached descriptive mineralogy as a science and not just a classification exercise. His insights continue to drive many research areas in modern mineralogy.” —Dr. Jeffrey Post PhD, Chief Curator of Mineralogy and Gems, Smithsonian Institution, National Museum of Natural History