The case for (and against) a rock from Mercury
By Alexandra Witze, 21:59 PM June 15, 2013
There are rocks from the moon, rocks from Mars — and now, just maybe, a rock from Mercury.
In early 2012, a nomad in the western Sahara spotted some green stones scattered on the sand. Knowing that the empty desert was a good place to find rocks from space, and that meteorite dealers would pay good money for them, he picked up about three dozen that looked related.
By spring all 345 grams of them were for sale in Erfoud, Morocco. Stefan Ralew, a meteorite dealer from Germany who was cruising th...
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