Dúrin´s Pick

I have not read anywhere that this was an actual item of Durin's. Perhaps it helped him shape the earth, but since he already has items like this, it wouldn't make sense to give him this. Though we are talking about ICE and they love to make no sense, as that makes sense to them. So this item probably did help shape the earth and merely took up another slot on Durin's being for items that are next to useless.