Claude François Geoffroy
Claude François Geoffroy (1729 – 18 June 1753) was a French chemist. In 1753 he proved the chemical element bismuth to be distinct from lead, becoming the official discoverer of the element. Before this time, bismuth-containing minerals were frequently misidentified as either lead, tin, or antimony ores. His observations on the matter were published in the Mémoires de l’académie française in 1753.
He is known as Claude Geoffroy the Younger to distinguish him from his father Claude Joseph Geoffroy (1685–1752), also a French chemist and apothecary, member of the Académie des sciences.
- Elementymology & Elements Multidict bismuth bismuth, History & Etymology
- Google Books The Encyclopædia Britannica: The New Volumes
- Centenaire de l'Ecole supérieure de pharmacie de l'université de Paris: 1803 by Léon Guignard