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amalgamation process

amalgamation process (umăl"gumā'shun) [key], in particular, a method to extract gold and silver from ores. The ore is crushed and treated with mercury, in which the metal dissolves. The amalgam is heated and the mercury evaporates, leaving pure gold or silver. The process has been criticized as an environmental and occupational threat due to the extreme toxicity of mercury.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

More on amalgamation process from Infoplease:

refining - refining refining, any of various processes for separating impurities from crude or semifinished ...
silver - silver silver, metallic chemical element; symbol Ag [Lat. argentum]; at. no. 47; at. wt. 107.8682; ...
Encyclopedia: Metallurgy and Mining: Terms and Concepts - Encyclopeadia articles concerning Metallurgy and Mining: Terms and Concepts.
gold - gold gold, metallic chemical element; symbol Au [Lat. aurum=shining dawn]; at. no. 79; at. wt. ...

See more Encyclopedia articles on: Metallurgy and Mining: Terms and Concepts

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