Samuel Lewis Penfield
Samuel Lewis Penfield (January 16, 1856 – August 12, 1906) was an American analytic chemist, mineralogist, and crystallographer who first obtained the chemical structures of more than two dozen naturally occurring minerals.
Samuel Lewis Penfield (January 16, 1856 – August 12, 1906) was an American analytic chemist, mineralogist, and crystallographer who first obtained the chemical structures of more than two dozen naturally occurring minerals.