>>13294701Pretty much 100%. But if you mean in terms o useful quantities in relatively easy-to-access bits of the crust? Pretty low, tiger.
Heavier elements are clustered in the inner system because of the fusion they experienced at the last supernova robbed the heavier elements of their momentum. Hence they clumped up in mercury and venus.
Venus (according to the best data we have) periodically resurfaces itself every 5 million years or so, and doesn't have tectonics, so all that heat and pressure is due to radio isotope decay, and I'll bet some fission deep down in the core.
Mercury has the same circumstances, but is less massive, and given the fact its vulcanism is probably over or nearly over,
But neither mercury, venus, or Mars has a magnetic field. So I think we got the better part of the deal
