What are Etherite Geodes?
Etherite Geodes are earned mainly in Co-op Trailblazing. They can be forged into Bars and pressed into Rolls (after you have unlocked the Blast Furnace and Rolling Mill), which can then be sold to Otto von Tesla in Nidaria. If you are a member of the Nidarian Guard, you will use Geodes to craft stat-boosting Ether Tubes to use on your Spectra Circuit.