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“I have always been very intrigued by minerals, so it is great to be one,” commented NASA Stardust mission principal investigator and University of Washington astronomer Donald Brownlee, AGU member, after learning the International Mineralogical Association had named a new mineral in his honor. Brownleeite, a combination of manganese and silicon, is the first mineral discovered in a particle from a comet. The mineral was found inside a particle collected by a high-altitude NASA aircraft from a dust stream that entered Earth's atmosphere in 2003.