- Oshu'gun Crystal Powder Sample
- Binds when picked up
- Unique (100)
- Item Level 65
- "You may turn 20 of these items in to Chief Researcher Amereldine at Halaa if the Horde have control of the base."
Source
This item drops from any of a great number of creatures in Nagrand, primarily humanoids (yes, ogres count!), beasts and elementals.
It has been confirmed that the Elementals in Elemental Plateau drop this too, albeit somewhat more rare than other creatures populating Nagrand.
Oshu'gun Crystal Powder Sample as a quest objective
This item is an objective for the following quests:
[67] 
[67] 
[67]