Waldemar Christofer Brøgger

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Brøgger, Waldemar Christofer


Born Nov. 10 (22), 1851, in Christiania (Oslo); died there Feb. 17, 1940. Norwegian petrographer.

Brøgger was a professor at the University of Oslo from 1890 to 1917. The theory of differentiation (chemical differentiation) of magma is associated with his name. Br0gger introduced the terms “leucocratic” and “melanocratic” rocks (in the first of which, colorless components predominate and in the second, dark-colored components). Brøgger established a type of rock composed of orthoclase and plagioclase, to which he gave the general name of “monzonites.”


Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Leipzig, 1890.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.