MIT study finds hand-held magnets erase meteorites' ancient magnetic memory (Black Beauty, NWA 7034)

To the point

Benjamin Weiss and colleagues showed that hand-held magnets used by meteorite hunters can remagnetize meteorites such as Black Beauty, erasing their ancient magnetic memory and hiding clues about their planetary origins, so researchers should use susceptibility meters instead.

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A message to meteorite hunters: Put down your magnets!

An MIT study finds the hand magnets often used by meteorite hunters to identify a meteorite usually erase the meteorite’s magnetic memory — and much of its scientific value.