Elunite Ore

Elunite Ore is a quest object for the Alliance Warrior quest. The ore can't be used by Miners or Blacksmiths for any of their crafted items. Elunite ore is a fine metal to work with, for it is considered to be blessed by the goddess Elune herself.

Source
Elunite Ore can be found in Crate of Elunite around a shipwreck near the Auberdine lighthouse in Darkshore.