Explaining the Elements in Earth's Crust

Iron-loving elements like gold and cobolt are found in Earth's crust at greater concentrations that would be expected - when the Earth was still in it's molten phase,...

19 December 2010

ByChris Smith.

Part of the show Lessons from the Past

Native_gold_nuggets.jpg

A collage of 2 photos, showing 3 pieces of native gold. The top piece is from the Washington mining district, California, and the bottom two are from Victoria, Australia. The bottom 2 pieces illustrate octahedral formations. The photos were taken at...

Credit:

Aram Dulyan

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Iron-loving elements like gold and cobolt are found in Earth's crust at greater concentrations that would be expected - when the Earth was still in it's molten phase, they should have been taken, along a large amount of the iron, into the core. New models show where these elements may have come from...