Nickel is more abundant than cobalt in the earths crust and most cobalt comes as a byproduct of nickel or copper mining: https://en.wikipedia.org/wiki/Abundanc

Nickel is more abundant than cobalt in the earths crust and most cobalt comes as a byproduct of nickel or copper mining: https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth... https://www.globalenergymetals.com/cobalt/cobalt-supply/ https://www.globalenergymetals.com/cobalt/cobalt-supply/