So, I made the gateway key. Went to the Abyssalcraft Wasteland dimension. Created a Abyssal Wasteland Necronomicon. Mined two full inventories at y=5 and found little more than a handful of tin, copper, nitre, iron, and coralium gems. According to the internet I find liquified coralium ore at y<22 in this dimension. And according to other people playing this pack it should spawn here. But I've mined 60 stacks worth (almost 4000 blocks) and haven't found a single bit of it.

I'm playing version 3.1.1.