NASA, USGS Scientists Go Rock Hounding in California’s High Desert

Equipped with rock picks and hand lenses, a team of geoscientists deployed to the Mojave Desert recently to investigate a tantalizing “fingerprint” detected by a NASA sensor. Their target: a cache of topaz hiding in plain sight. The geologists weren’t searching for gem-grade treasure. Rather, the presence of topaz could hint at a more valuable […]
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NASA
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