Abraham Gottlob Werner
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Werner, Abraham Gottlob
Born Sept. 25, 1750, in Wehrau, near Görlitz; died June 30, 1817, in Dresden. German geologist and mineralogist.
From 1771, Werner studied natural sciences at the University of Leipzig, and from 1775 he taught at the Freiberg Mining Academy. He developed a classification of rocks and minerals that proceeded from their external characteristics and considered their chemical composition. Werner was the head of the widespread, late 18th-century school of geological thought known as Neptunism, according to which all rocks (including volcanic ones) were formed as precipitations from water. Werner was the founder of a major geological school.