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It's a good article but I am not buying that you can tell that just from the Tungsten isotopes.   There could be other processes caused by the pressure and temperature changes as the magma brings these precious metals back to the surface of the crust.    Plus, why is the gold content of current meteorites so low?    If it were higher, I would be out hunting the meteor strewn fields :)

 

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3 hours ago, Andyy said:

It's a good article but I am not buying that you can tell that just from the Tungsten isotopes.   There could be other processes caused by the pressure and temperature changes as the magma brings these precious metals back to the surface of the crust.    Plus, why is the gold content of current meteorites so low?    If it were higher, I would be out hunting the meteor strewn fields :)

 

As a product of a Super Nova microscopic in nature  it may or may not have been present when the meteorite was formed.  Larger bodies like planets exhibit more gravitational force and would collect said gold at a much higher rate over time.  

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On 7/13/2017 at 3:02 PM, Andyy said:

  Plus, why is the gold content of current meteorites so low?    If it were higher, I would be out hunting the meteor strewn fields :)

 

The earth has been bombarded with billions and billions of tons of meteorites in it's early history, all containing minute amounts of gold and other precious metals. Billions and billions of tons of meteorites X a minute fraction of gold = millions of tons of gold. Over time the heavy elements melted and sunk to form the core. Volcanic activity brought some of these elements to the surface over time.

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