rock fulgurite Directory References Discover 11 Banned Books Through Time 12 Novels Considered the “Greatest Book Ever Written” 10 Failed Doomsday Predictions Flags That Look Alike Why Is Ireland Two Countries? The 10 Greatest Basketball Players of All Time 14 Tough Questions Answered Contents rock fulgurite mineral Ask the Chatbot a Question Learn about this topic in these articles:varieties of fulgurite In fulgurite>Rock fulgurites, the other variety, are thin, glassy crusts on rocks. They generally occur on mountain summits, as at Toluca, Mex., and Mt. Thielsen, Oregon. Read More