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September 8, 2011 09:05 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/1bNJ6LH05Uk/Icelandic-Rocks-Suggest-Meteorites-Brought-Gold-To-Earth
Icelandic Rocks Suggest Meteorites Brought Gold To Earth
sciencehabit writes "Gold, platinum, and other precioius metals were sucked into Earth's molten iron core soon after our planet formed. So where did all of the material for our fancy jewelry come from? According to high-precision measurements of two isotopes, or atomic variants, of tungsten in 4-billion-old rocks from Greenland published online today in Nature [the abstract adds a bit more; the full version is paywalled, though], precious-metal-bearing meteorites struck Earth around this time, coating the planet in a veneer containing gold, platinum, and other elements long after their native counterparts had disappeared into the planet's core." 
Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/1bNJ6LH05Uk/Icelandic-Rocks-Suggest-Meteorites-Brought-Gold-To-Earth
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