You can’t compare the two. Most open pit gold mines average 2-4g/tonne or 0.0002%
We're building every EV car to handle every possible EV-only road trip because we can and because it's cool, not because it's actually necessary. We could still eliminate 90%+ of all road emissions instantly with just PHEV's using much smaller batteries, if some sort of lithium shortage made such a thing necessary.
Highest grade copper mines 3-4%
Zinc mines and other base metals sit at 2-3%