Valuable resource for various items like Nechromechs and high level Deimos content.
Since the release of Deimos, I periodically go to the map and do it for about 30m / 1h. I even dedicate a good part to mining.
I never got ONE of them! AND I FARM A LOT.
Tested all mineration tools, Fortuna, Cetus and maxed ones. However, this specific feature never dropped anywhere. I tested it in all caves, outside, on missions, steel path mode, pillars, Isolated Vaults on solo/public and nothing.
It's one of the worst drop rate items I've seen in the game. Improve your drop plz.