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Paul Niggli

(1888—1953)


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(1888–1953)

A Swiss crystallographer and petrologist at the University of Zurich, Niggli studied magmas and metamorphic rocks, and introduced the use of phase diagrams in petrology. He also made a classification of sedimentary rocks according to grain shape and, in 1928, he and his students attempted to calculate the bulk chemical composition of the Earth. See niggli method.

Subjects: Earth Sciences and Geography.


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