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A Michigan Doorstop Was Authenticated as a $100,000 Rock From Space
A 10.22 kg rock that sat on a Michigan farm for decades was confirmed in 2018 to be a Group IIIAB iron meteorite made of about 88.5% iron and 11.5% nickel. Central Michigan University geologist Mona Sirbescu authenticated the find and the Smithsonian later verified it, putting it