Samuel

Samuel Lewis Penfield

#163,436
Most Influential Person Across History

American chemist, professor, Yale University

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Samuel Lewis Penfield
Chemistry
#6558
Historical Rank
chemistry Degrees
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Why Is Samuel Lewis Penfield Influential?

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According to Wikipedia, Samuel Lewis Penfield was an American analytic chemist, mineralogist, and crystallographer who first obtained the chemical structures of more than two dozen naturally occurring minerals. Biography Penfield prepared for college at the Catskill Academy and the academy at Wilbraham, Massachusetts. He matriculated at Yale in the Sheffield Scientific School in 1873, graduating with honors in 1877 and becoming a scientific assistant in chemistry and in mineralology. Except for brief periods abroad, in Germany , his entire subsequent career was to be at Yale. In early work, He analyzed the then-new so-called Branchville phosphates, fairfieldite and fillowite, as well as samples of chabazite and rhodocrosite from the same locality. He was soon known as expert in analyzing minerals containing fluorine.

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