In the earth's crust; that's a start. We know the core is solid iron. The outer core is molten iron/nickle, Stainless Steel? Haha. The upper mantle and lower mantle?
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In the earth's crust; that's a start. We know the core is solid iron. The outer core is molten iron/nickle, Stainless Steel? Haha. The upper mantle and lower mantle?
Last edited by nutpie; 08-04-2016 at 04:31 AM.
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