I found a piece of fool’s gold when I was eight years old. I thought it was the real thing. Dad had to explain it to me, that I had been “fooled” like so many others :-)
So now, Gold is fool’s lithium
What a bunch of carp.
It is possible that some “fools gold’ (Iron Pyrite) {Iron DiSulfide} might carry a tiny amount of lithium as an impurity in it, but not enough of it to make it economically viable to exploit it. You are more likely to find real gold in a pyrite deposit than lithium.
And processing it would be pretty nasty, since most of what you are dealing with is sulfur, and the real environmentalists hate that stuff.
Although somewhat coincidentally, they ARE using Iron DiSulfide as ANODE material in non-rechargeable lithium primary batteries (Like Energizer L91 AA batteries)