There are no other references to place the mountain Zerin in relation to any other places. It cannot be placed in either the Old World or the New World. Occam’s Razor cannot be used to place it anywhere, so it is left off all maps.
Commentaries
ETHER 5:30 [12:29]: And I, Moroni, having heard these words, was comforted, and said, O Lord, thy righteous will be done, for I know that thou workest unto the children of men according to their faith; for the Brother of Jared said unto the mountain Zerin, Remove, and it was removed.
Commentary: This verse references the place of the mountian Zerin. This is the only reference to the mountain Zerin and there is no information regarding its location in either the old or new world.
Map