Wikipedia
Fulcanelli ( fl. 1920s) was the name used by a French alchemist and esoteric author, whose identity is still debated. The name Fulcanelli seems to be a play on words: Vulcan the ancient Roman god of fire plus El, a Canaanite name for God and so the Sacred Fire.
The appeal of Fulcanelli as a cultural phenomenon is due partly to the mystery of most aspects of his life and works; one of the anecdotes pertaining to his life retells, in particular, how his most devoted pupil Eugène Canseliet performed a successful transmutation of 100 grams of lead into gold in a laboratory of the gas works of Sarcelles at the Georgi company with the use of a small quantity of the " Projection Powder" given to him by his teacher, in the presence of Julien Champagne and Gaston Sauvage.