This is for genisis 2, so go to the space area every time the time goes to 00:00 the recourses will change after 01:30 into something else and it's not garenteed for it to be element, but it's worth a shot
I have noticed that a pickaxe collects the best element on gen 2 in the shard biom. The strider and the mining drill collects shards the best by far, probably as much to make enough element in the long run. But the pickaxe is still great.
On crystal isles, check around the bubbles on monster island and u still dozens of crystals and they give you element. Also check up near top, there is a huge crystal forest that gives elemt. And make sure you hit the small crystals, not the ones that zap you.
As said by others, element can be mines on specific asteroids on the Genesis 2 map. It’s pretty distinctive. The asteroids have an almost ascendant teal type shade to them, and the have basically glowing ascendant teal crystals. The crystals drop primarily Shards and Stone, with a small amount of element even on boosted resource single player game.
An Ankylo is you best best for collecting large amounts of Element. A melee buffed Mantis with high level picks may be able to do better, I’m not sure.
Easiest to get in a certain asteroid cycle in Genesis 2. There’s tons of shards and element for the taking. I play on 3x resourcing, but I was able to gather about 40 in a few minutes (in official that would probably be closer to 13, counting shards).