Tracking leads me to a shiny around: -638.38 58.35 -475.88 283.30 0.00 0.00 in Aether Wroughtlands(overland). It appears to be stuck somewhere in the rocks as I can not get anywhere I can target it.
I'm also tracking resource nodes that are underneath rocks and ad terrain. There's an ore node that spawns under that great big slab that Tishan's Lockbox sits on. The tracking trail terminates right at the edge of it.