When using a doedicurus to gather stone, I would suggest going carrying the doedicurus on a queztal, and fly to a mountain that contains metal. You get more stone from metal rocks when using a doedicurus
Just a quick tip, dont get a high level one of these or an anky when using em for harvesting. Instead breed you an Argy specializing in weight and fly the doe/anky around to the stone/metal spots. Gather manually via doe/anky
On Ark Mobile, at least, Argies can pick tamed ones up and they’ll auto mine stone when you fly near rocks, making it a great combo for when you have both of them and don’t want to waste durability of your hatchet.
Equip your Doedicurus with a saddle, pick it up with an Argentavis and fly near rocks as it automatically harvests the stone as you fly. Level up the melee damage to harvest more stone with each swing. Level up your Argentavis’ weight capacity be an insane stone harvest team.