Fulgurite Published December 20, 2018 By Featured HLF 1 taken with SEM. Eutectic crystallization texture in iron silicides from a fulgurite from lower Michigan (lightning strike glass). Submitted by Christopher Stefano, Associate Curator, A. E. Seaman Mineral Museum. ← Previous Post S-TEM Provides Insight to Alloy Behavior Next Post → FESEM is down