Not Gunna Be Enough Lithium, page-148

Personally speaking, Cinovec's tin was a major factor in the investment analysis. KC isn't joking when he says that Cinovec is a globally significant tin deposit. The grade is very low, but there's a lot of it.

Since Zinwaldite ore is not as soft as spodumene, it presents some challenges on the processing end. The tin byproduct is a major value-add that secures the economics of the project. With the supply/demand dynamics for tin looking tight for the rest of this decade, the tin credits should be a significant additional revenue stream.