Objectives
Take the Elemental Shard Sample to Lotwil Veriatus.
You recall Theodora saying that Lotwil was stationed in a camp to the east.
Provided: 
Elemental Shard Sample
Description
G.L.A.
Those are the 'initials' imprinted on the elemental shards. Below the initials are a rank marking of some sort. The machinations you destroyed in the Burning Steppes were of 'Rank IV.' I assume that this is a lowly rank.
Take this shard sample to Lotwil Veriatus in the camp to the east. He is a scholar of some renown in the field of elemental sciences. He may be able to assist us in our search.
Progress
What have you got there, friend?
Completion
<Lotwil's face turns white.>
I... I know these markings.