Empyrium Seam

Cross-posting from my comment on Empyrium Deposit:

If you have zero ranks of this, there are pre-requisites. [npc=125341] is your contact for mining quests as you get the drops, so if you don't see him on the Vindicaar, you're definitely missing pre-requisites.

The start of the questline is The Hand of Fate. I think [npc=125341] became present on the ship after completing The Child of Light and Shadow or around there. However, even after I unlocked him being present on the ship, I didn't immediately get a rank 1 deposit drop. The last thing I did before I mined a single node and got a rank 1 deposit quest drop was complete The Burning Throne. I'm not sure if going that far is actually necessary or not, since the first seam i mined I didn't also get a rank 1 seam quest. Other posts indicate that Xera being "recovered" is the actual pre-requisite, which I think is The Child of Light and Shadow, and aligns with [npc=125341] becoming present on the Vindicaar.

Edit: got a rank 1 seam quest after about 10 seams without any further quest progression.

You must first complete the quest The Child of Light and Shadow, for both the Empyrium Seam and the Empyrium Deposit, got Empyrium Deposit Chunk and the Empyrium Seam Chunk after around 10 minutes of farming in Krokuun.