Yeah I can confirm mining in Dho Gates is where I got it to drop? The zone isn't too crazy, I just circled around looking for points? Maybe I was lucky, but I got the drop in about 20 minutes?
Fixed for consistancy?
*consistency
There's a mining point that pops up often nearby a scaleable area in the westernmost part of the zone. I got my Atramenterrane there, just gotta watch out for the Velkk that lurk around there.