Guild Wars 2

Orichalcum nodes have 23 hour spawntimer. Without server reset, locations will be the same. You cannot mine more by server swapping, and nodes are in different locations on different servers (but on same maps, naturally). WvWvW also has few nodes.

Each map has a set number of Ori nodes that should always be there. Frostgorge has 2, Malchor’s and Cursed Shore have 5 each, and I think Southsun has 3? Not sure, I never go there.
They will always be in the same place until there is a server reset, then they will change places.