Hanorane (han-or-a-ney) is a moon with a dynamic surface covered in charged sand particles that drift in massive rivers suspended by electrostatic levitation. The only solid ground is the worn and ancient remains of black marble mountains that stick up above the sand. The magnetic fields here have been compressed down to surface level. Storms here typically feature changes in magnetic fields opening vast chasms, creating sand fountains, and other topographical changes. As I have it now, when the amount of sand in the atmosphere reaches a critical threshold a vast electrified sandstorm forms. What I imagine is powerful lightning bolts melting sand into huge fulgurites through the air, leaving behind something like a glassy brier that would decay in the coming weeks. However I am not sure that a sandstorm alone could accomplish this. Thoughts?
Fusing sand on earth works because the sand grains are touching each other. If the grains are blowing around, it would need to be a particularly dense "sand-fog" for the grains to fuse together into a shape strong enough to survive falling to the ground or not shatter when falling over. If the grains are too far apart then they may fuse to a close neighbor but not into a large enough shape to be recognizable as fulgurite. Sand tornadoes might be an opportune place to concentrate sand and increase electric charge. Also, a tornado might generate some very tall structures.
As long as there are dense sand storms (which I'm sure there are) then I think it's plausible, especially if you play up the planet's weather with intense and frequent electrical storms.