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Subject: Canada, Northwest Territories, Acasta River

  • World's Oldest Rock - Northwest Territories

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    2015-08-11

    Campbell, Sandy

    This rock is a chip from the oldest rock in the world, a crustal outcrop at Acasta River, Northwest Territories. It is 3.962 billion years old and is comprised of zircons, quartz, plagioclass fedlspars, biotite, hornblende, allanite, sphene, garnet, magnetite, pyrite, chalcopyrite, sphalerite...

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