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Iridium Question -- Why is Iridium plentiful in space rocks but scarce on Earth?

  1. Jul 16, 2017 #1

    Sanborn Chase

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    Gold Member

    Why is iridium plentiful in space rocks but scarce on earth?
  2. jcsd
  3. Jul 16, 2017 #2

    jim mcnamara

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    Staff: Mentor

    From https://en.wikipedia.org/wiki/Iridium

    So, the "missing" Iridium took a one way trip into Earth's core.
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