Ed Conway's book Material World has more about silicon.
An even more obscure mine in Spain is used for the quartz to make the crucibles that hold molten silicon. For some reason its melting point is just far enough above that of silicon metal to make the process feasible.
An even more obscure mine in Spain is used for the quartz to make the crucibles that hold molten silicon. For some reason its melting point is just far enough above that of silicon metal to make the process feasible.
1. https://www.amazon.com/Material-World-Materials-Modern-Civil...